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For Intel Core i5 2500K, 95 customer reviews collected from 1 e-commerce sites, and the average score is 4.9.

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5.7.2012

The Core i5 2500K Is an absolutely brilliant processor, it is so damn fast, and is a worthy upgrade from a Core i5 750 that I had before, it overclocks like a beast, in 5 minutes I went from the stock 3.3GHz to 4.5Ghz just by changing the multiplier and upping the Vcore voltage by a very tiny amount and then rebooting, it's so easy to overclock Sandy Bridge that it's just about a no brainer to do so.I could easily hit 4.8GHz or even higher, but I have no need to go any higher than what I have already as it is so fast at 4.5GHz.It blows away my i5 750 for anything, using Xvid4PSP version 5.0 the 2500K can encode a mp3 file from WAV or WMA at a peak speed of over 1000FPS,whereas my i5 750 could barely manage 600FPS tops, and in testing using Intel Burn Test my i5 750 peaked at about 58GFlops, whereas my i5 2500K reaches over 115GFlops and sometimes even higher.I haven't had much chance to play games as I only have the HD3000 graphics atm but I can guarantee that if I put in my HD5750 it would be easily 20%+ faster than my old system despite using the same graphics card.When using Skype with my old processor the usage was at around 25 to 35%, with the 2500K my processor usage sits at less than 10% and most of the time it's at 5% or less, and yet there's no loss in quality from either end of the video call and in fact I'd say the quality is even better.It's the best processor when it comes to price to performance ratio and it can even keep up with the Sandy Bridge-E processors in some cases, and if that isn't testament to this processors amazing ability then nothing is.The cpu cooler it comes with though is really really bad, so if you're buying this processor, then please buy something better to cool it with, I used the stock cooler at first cause I needed some new thermal paste for my H50, and the processor at stock was hitting over 90 degrees celcius at which point I had to end the stress test, cause it was just 8 degrees away from TJMax, once I got the H50 on it at stock speeds the processor sits at just 45 degrees at full load, and at 4.5GHz it reaches about 76 degrees, which is way better.If you're not bothered about Ivy Bridge then Sandy Bridge is the mutts nuts, but with Ivy Bridge out it's better to go with that.I would highly recommend this processor or it's newer brother the i5 3570K, which although it doesn't overclock as high, once overclocked to 4.3GHz Ivy Bridge will run rings around Sandy Bridge at 4.5GHz, and use less power as well.The bottom line is that the Core i5 Sandy Bridge processors are extremely fast, amazing overclockers, unbelievably efficient and for the price are some of the very best processors Intel has ever released, I highly recommend it.
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27.2.2012

The Intel i5 2500k really is an incredible CPU. For under £170 nothing else comes close. It's impressively power efficient and runs at a very reasonable temperature. Yet more importantly its performance is staggering- a genuine tour-de-force from Intel.To start it overclocks brilliantly- a stable 5 GHz is possible with a good air cooler, whilst 4.7 or 4.8 GHz is a perfectly achievable everyday overclock, which should avoid excessively high voltages. That said you don't even need to overclock it in order to get good performance- its architecture and IPC are both brilliant and as such it offers great performance even at stock frequencies.The turbo feature is also very useful for anyone who doesn't fancy- or really need- an overclock.Furthermore it bulldozes through applications (AMD can't hope to match it unfortunately) and is sensationally good in games. Just google 'i5 2500k reviews' and have a look at some of the benchmarks recorded. Sensational.I remember being shocked when the i5 2500k was first released a year ago- despite costing a fraction of the price it gave the beastly £800 Intel hexacore i7 980x a decent run for its money, even managing to surpass it in less multi-threaded applications. I couldn't believe that Intel could possibly sell a £200 CPU which could match their king-of-the-hill £800 hexacore. This concept made no economic sense. And a whole year later the i5 2500k still remains the unchallenged mid-range king. The perfect trade-off between price and performance (much more of the latter). A remarkable achievement indeed. It even fares well against Intel's newest extreme hexacores (LGA 2011) which easily cost three or four times as much. The i5 2500k isn't the fastest CPU in the market (although it isn't too far off...), yet it offers by far the best value for money.I used around about twelve of these brilliant CPUs in 2011- I used them in every single rig I made, for myself, for friends and for family- all were centred around the black magic of the i5 2500k.So there you have it- as 2012 commences it appears there still isn't any worthy challenger to the i5 2500k. Someone bring me a bucket- I'm going to need a whole lot more of these :D
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16.11.2011

About a month ago I decided to build my own desktop as my laptop was getting a bit aged and I found pre-built desktops to be overpriced and either too far above what I wanted or below what I wanted for the price. After thinking a bit over the choice between the i7 and this I finally settled after reading about bottlenecking I settled on this as it was the cheaper (this came into the overall cost factor of the desktop) and would fulfill all my needs since I do not do many processor intensive tasks such as video encoding, etc.Installation was simple and easy and I as always I fretted over the slight crunching sound it made when pulling the level on the motherboard down however once it was in.The supplied fan is sufficient and actually quite effective for ordinary use at stock clock and is relatively quiet. At first I made the mistake of not properly attaching the fan to the motherboard. Hence when I first used the computer and checked the temperatures they were upwards of 80-90 degrees which alarmed me. However after opening up the computer I just had to firmly press two of the connectors onto the motherboard once they had clicked again. After this the temperatures stayed well down into the mid-upper 30's range and the highest they seem to go whilst performing intensive tasks is lower-mid 50's, and even that high is rare. I'm not sure whether the fan came undone or whether it was my own stupidity, however since I've had no problems since I'm guessing the latter.The processor performs brilliantly performing all tasks I throw at it. The lower price meant that I could upgrade my graphics card purchase to a 2GB AMD 6950 and all games look stunning. There hasn't been anything that has hindered it at all and I have no complaints.Overall this is a good price for a great CPU and whilst there are several cheaper AMD processors out there I think this CPU offers great performance/cost value and if like me you don't need the absolute best i7 processor then personally this is the best choice. The ability to achieve great overclocks, as others have noted, also means that I have this option open later if and when I need to and get some more juice out of it.
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26.4.2012

At last! After all the machines and in all the years I find a processor that does justice to the software that runs on my machine!How many times have I picked a processor with the latest this that and the other only to find it barely copes with either the OS or various software it is meant to run properly with?This processor (running Windows 7) works like a charm. Everything is instantaneous on opening and running. I am not a games user at all but typical applications which run immediately and without error are:-Windows 7 - Home PremiumIE9/Firefox/OperaMicrosoft Office 2007Photoshop CS5 ExtendedSkypeetc; etc;I use a Gigabyte Gigabyte XKT-1155 Z68AP-D3 Motherboard (Rev 2.0)and has 4Gb RAM onboard and which seems to run well with this CPU. Moreover, I use a Intel 80GB SSD which has a Samsung standard SATA HDD as a secondary drive and both run smoothly and instantly (certainly with the SSD anyway). I was also surprised to notice how small the die is itself. It seems the processor will one day end up the size of a postage stamp at this rate! However, for now, it appears 25% smaller than the early Pentiums and much thinner too In fact I had an initial job trying to find the processor in the box it came in, as the stock fan takes up almost 99% of the volume, with the CPU just tucked in a little side pocket, almost unnoticeable.I chose a 3rd party fan and didnt use the stock fan that comes with this processor, as I wanted a quiet operation in addition to speed and reliabilty. However, I use the stock fan as a case fan :o)I've used Intel in the distant past but have used AMD until this time, either because the laptop came with it or that I was building to budget or using someone elses machine. Needless to say, I am hoping that this Intel will last me many years return and with trouble free operation but above all smooth, fast and seemless running of OS, applications and any other function it is currently providing, such as acting as the video card for my HDMI connection, for example.Overall, this is one purchase I dont regret making and feels more an investment than some short term gain.Thanks,M.
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21.7.2011

This review is for the mobo above which was not purchased from Amazon, the i5 2500k is a great piece of kit.The 2500k runs at 4400 so easily with no hiccups whatsoever and at temperatures of between 25 and 40 max, amazing.My first mobo would not boot into graphics past post so I returned and got a replacement which would boot into graphics using the on chip gpu but have had many wasted hours and poor results. On setup at default settings the board would reboot up to 3 times on starting for no apparent reason and no amount of playing with the bios resolved this, eventually on trawling the web I found that many others has the same problem and some days later someone found that by disabling pllin the bios the board would boot all be it slowly for many.On trying out the overclocking which is the main reason for buying this setup the board would lose settings after cold start and annoyingly while the in windows overclocking showed a very good auto overclock gain of 31% and a speed of 4.4 on reboot the post screen only shows 3.4 against the stock 3.3 so I have no idea what is actually happening with the figures continuing to be different. An update of the bios did not change any of these charachteristics.Finally while the graphical bios is usefull and relatively simple to navigate, the available options are confusing and poorly explained as is the mobo manual leaving a pretty experienced builder and overclocker like me struggling to make any real sense of it as a whole.It is clear to me that the bios needs many more updates but more dissappointing is the lack of information from Asus on a product which is supposed to be a flagship product.Update.Uninstalling the asus aisuite and using only the bios itself to adjust settings seems to have stabilised the settings and my system runs happily at just under 4400, what a great cpu. Am hoping a bios update will be available soon to solve a few remaining issues and then I will be very happy. PS Remember to disable "pll" in the bios!
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16.4.2012

Just done a new build and have upgraded from an Intel Core 2 Quad Q9550 2.8ghz which has served me well for the last 3yrs.This however is a whole new ballgame and boy am i pleased with it.Married it to a Gigabyte Z68 Rev2.o board an artic cooler7 pro and 8Gb corsair vengance 1600mhz DDr3 and an OCZ Agility 2 Series - Solid state drive - 120 GB - internal - 3.5" - SATA-300 - anodized and boy can this baby fly. I knew I needed some more power but man i never realised how slooow I was.Even my video rendering is cut in half as I like to download movies and put them on to dvd to watch on the big screen.I have noticed some reviews saying this cpu is not for video converting but I can tell you thetime it takes me has now been halved and my old cpu was built for it.I have even been overclocking it albeit just a tad as its so easy but dont do what I did and use the easy bios upgrade as I knacked my system and had to go on to the gigabyte site using my laptop download the bios put it on a fat32 usb stick go into the bios and do it properly.You have been warned lol.I also upgraded my old Ge force 8800gts graphics card to a AMD radeon 6850 HD and got a WEI of 7.7 out the box.The slowest I have on the WEI is 7.6 thats for my CPU and SSD My memory was 7.7 out the box but after turning up the settings in bios to 1600 it is now 7.9 I am going to try over clocking the cpu a bit more to see what this puppy can do but the cooler I have is maybay not up to the task and after messing up the bios I am a little wary for the moment .I am playing BF3 at the mo and it is so smooth with settings on HD and maxed out.Over all I am well chuffed with my new set up .To sum up its worth every penny spent.Will need to start saving for my next build in 3 yrs.Wonder what they will have out by then lol.
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13.9.2011

As most people are aware the K series sandybrige processors are the latest from intel, if overclocking isn't your thing then thei5 2500 will probably suit your needs also slightly cheaper although the stock speeds are great. I upgraded from an i3 first generation processor and boy there is an immense difference of the speed of this CPU. I haven't gone crazy with the overclocking but I have used certain programs and activated turbo mode that runs 3.7ghz. I haven't had any issues with it overheating and I'm using the stock cooler. Core 0 runs around 40'c and 1-3 at 39'c. I was amazed at these temperatures. I purchased the 8GB g skills in dual channel (2x4GB)to go with it and to be honest for the little bit of gaming I do 4GB would have been sufficient. I completely built a new system around a month ago adding a radeon 6850 and its taken (without trying) everthing I've thrown at it seemlessly. I sent 226GB of files to my Western Digital box in an hour and 40 mins through my gigabit network. Totally impressed in all aspects of this CPU. If you are using photoshop and editing movies then 8GB will be more than enough. Multi tasking has really come of ease. no more waiting for programs to finish processing before opening another. This thing really flies.Note, if you are looking at multi tasking in a big way there are later edition processors from intel that will utilise more memory i.e quad channnel, releasing later this year but seriously business users may look at these but for now this will do me for the next few years. Highly reccommended.
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29.1.2013

This CPU hits a real sweet spot in terms of price and performance!Overclocks like a beast too, I use a fairly modest £30 Zalman aftermarket cooler on mine and I've had this CPU reach all the way up to 5ghz overclocked but A) wasn't stable long term and B) I couldn't tell much difference anyway. Now I have it at 4ghz and it seems to be stable. Say that out loud 4ghz quad core cpu. Mental!I'll never forget when I ran a stress test utilizing 100% of all 4 cores for a period of time and as that was underway I was using the computer watching 1080p Youtube clips as well as playing lossless music files all at the same time and the computer was still 100% responsive with zero skipping in any of the audio while the stress test was running for a good hour or so.That's impressive!So it handles very well, great for gaming too. Even at stock speeds you can run GameCube emulation and play Wind Waker at 1080p with the highest internal rendering and the game will play at full speed as if it were on a real GameCube. PS2 emulation is the same deal if you have a good graphics card.If you want a fantastic, reputable CPU for a new PC that's received nothing but wall to wall praise - without spending an arm and a leg - *This* is the CPU to be buying!
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2.8.2011

I have just upgraded to this chip from an AMD 965 BE and the difference is night and day. Core for core the i5 outperforms it at every step at stock. Being a 'k' series chip this has the unlocked mulitplier for overclocking. This is where it shines bright!Rest of my rig:Core i58gb ram @1600 mhzASRock Z68 Extreme 4 moboNvidia GTX 670256gb M4 ssdAll wrapped in a coolermaster silencio case.Overclocking this chip using a z68 board is a piece of cake. ASRock have several preset oc profiles for 4.2/4,4/4.6 etc. Mine clocks happily to 4.8 using an Amtec Kuhler 920. Vcore has not gone over 1.34 with everything on auto. I would have preferred an air cooler but it does the job and I was limited in height with my case.This chip absolutely flies!Bought the retail chip as it comes with 3 years warranty not 2 like the oem one. Everything is soo quick. Games and programmes are more responsive. If oc'ing make sure you ahve a good cooler on it. I'm using a thermolab bada cooler due to size restrictions in my case and the chip idles at 35 and after several hours load hits about 70. Very very happy!Update: fitted an Antec Kuhler 920 all in one water loop and clcoked this bad boy to 4.8ghz. So far temps haven't gone beyond 64!! Awesome chip.
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30.3.2012

I upgraded components my old computer such as the motherboard, processor, RAM and heatsink. I those the i5 because of the brand new Sandybridge technology and I chose the 2500K because of it's overclocking potential for the future (and, for some reason, it was around 50p cheaper than the 2500 brand, so it was the obvious choice).Old build:Q8300 2.5Ghz Quad Core Intel ProcessorAn old mobo, forgot the name (sorry!)7GB DDR2 RAM (varying mhz)Factory Heatsink, big and loudNew Build:i5 2500k 3.3ghzAsus P8P67-M Pro Mobo8GB Corsair DDR3 RAMArctic Cooling Freezer Xtreme Rev.2 CPU CoolerAfter getting the computer up and running I did a 3D Mark 11 test and the score went from a Physics Score of 2856 to a score of 5369,which is over double. FPS in games such as Shogun 2 went from 40 to 60 (and the graphics bumped themselves up from high to ultra). And overall computer performance, installations and other processes are incredibly quick also. I cannot comment on the stock cooler as I have not used it, all I can say is it came with pre applied thermal paste.An amazing buy!
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4.3.2012

Months i spent researching Cpu's and mobos, A lot of which was done reading reviews here on Amazon. My goal was to update my PC so as it would play the latest games and future releases for a couple of years or more.The I5 2500k stood head & shoulders above all others (except the I7 2600k) for my needs, which is just gaming, Those games currently being, SWTOR, BF3, Skyrim, RO2 and LOTR War in the North.Also updated to a Z68 mobo from Gigabyte(z68ap-d3) 8gb Ram (kingston hyper x 1600) and new PSU (antec hcg 750w).I have yet to overclock the 2500k as the stock cooler was fitted, but will do in a year or so with an aftermarket cooler.The I5 is just an awesome chip for the money,everything has become snappier than before, The games i mentioned above are not a problem for the 2500k and they are some of the most demanding games around at the moment.So that's that, Kinda miss the excitement and expectation which comes with researching and then having the new gear fitted! But now feel safe in the knowledge that my PC isn't struggling to keep up for a couple more years.
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15.10.2011

As with other reviewers, most impressed. After a bit of internet searching soon found detail instructions on how to tweak the BIOS settings to give a fully stable 4490MHz overclock. Add some decent quality fast memory and away you go!Few points to note though:1. Motherboard. Make sure you get a good one. Read the reviews and make sure you end up with one that suits your needs and case requirements. Do not be temped to use some of the "overclocking" utilities bundled with the MoBo. Some are really poor, so do it properly.2. Cooler. You can use the stock cooler but..... whilst it is perfectly adequate for use at the stock speed, if you are using the 2500K overclocked and pushing it (that is why you bought it,right?) then it struggles. Also the intel stock coolers are about the worst dust trap mankind has yet to to create. Again read the reviews and get a good quality cooler but (a) make sure it actually fits in your case and (b) matches your motherboard configuration in terms of not doing something really boring like obscuring memory or graphics card slots.
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14.11.2018

Bought this from Amazon in 2011 and it has been in daily use since. Overclocked with ease to 4GHz and just recently gave it another bump to 4.4GHz. I keep trying to find a reason to upgrade (I love new computer bits) but there really isn't any need. I have changed graphics cards twice over the years - from a 560Ti to a 670 and most recently to a 1060 6GB. This CPU has never failed to deliver the goods. Looking around at recent benchmarks I can't see that there is any bottleneck from this CPU at the speeds I'm running it at.If you're looking to build a budget gaming rig (even in 2018) then this processor should definitely be worth your consideration.If you can get a used one from a well known online auction site with motherboard and ram for around £100 then you're laughing! A 2600K wont even cost you much more. Unlike many CPUs that followed these run very cool too meaning mine could probably last another 7 years!Used with Gigabyte Z68xp-ud3p, Arctic Freezer 13 cooler and Corsair 1600MHz LP ram - all purchased at the same time and still working flawlessly :)
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2.6.2011

I did an awful lot of research before I decided that the i7 processor didn't make much difference when it came to gaming compare to pricing for the i5. However I then realised there was a considerable amount of difference between a standard i5 and the i5 - 2500k. Look up the CPU comparisons on the web and you'll see what I mean. At the end of the day the i5 2500k can also be massively overclocked as long as you have the cooling for it. Again on Amazon you can find PRE-OVERCLOCKED i5 2500k processors and motherboard/memory bundles. REMEMBER the 'K' designation means the CPU is UNLOCKED so you can overclock it.If you're not into overclocking and cooling your CPU then go for a i5 2500.I used to build my PC by simply buying the best and it would cost me around £4k be it laptop or desktop. However as I have become older and wiser I find doing a lot of the research beforehand has saved me tons of money and means I can upgrade my PC every couple of years instead of every 3-4 years.
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2.9.2011

I love this processor, its quick, offers great overclocking features and has only presented me with 1 issue, and thats with the stock cooler.My computer was randomly crashing when running lots of applications, and though CPU Usuage and RAM usuage was low, it would just blue screen. I later discovered this was due to the CPU getting past 100c temperature without overclocked - obvious solution to this problem: upgrade the fan. I have a new CPU fan on its way to install and try out to see if this improves, and I will update review afterwards.It is important to note that I was pushing it, rendering out 1080p video, whilst playing a Flash video and using Photoshop - so its not "light use",and when playing Crysis in full settings, it was maxing only around 65c with the stock fan. So for the hardcore gamer, the stock fan should be good enough at stock speeds.
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