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[DigitalFoundry] Is It Time To Upgrade Your Core i5 2500K?  

post #1 of 402
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Source (EuroGamer)


Quote:
It's THE classic i5 processor. Many still swear by it today. The question is, does it still hold up to this generation's most demanding titles? Rich goes in-depth and stacks up the classic i5 against the modern Skylakes in a number of theoretical and practical gaming tests.

The legendary Sandybridge I5 2500K is placed against the latest in CPU and GPU hardware in this fantastic video!

Running a few of the latest games such as The Witcher 3 and The Rise of the Tomb Raider, Digital Foundry overclock the CPU and run it alongside fast DDR3 memory to see how well it holds up.


Should You Upgrade From Core i5 2500K to i7 3770K?

Quote:
Think you've maxed out your 2500K? Not sure you can afford a whole new Skylake system? The Core i7 3770K slots straight into your system - so should you upgrade?

Edited by TopicClocker - 2/23/16 at 1:48am
post #2 of 402
2500k might be the best CPU of all-time. It definitely falls behind a bit compared to the 6500 but when oc'd it pretty much matches it...not bad for a 5 year old CPU.
post #3 of 402
Been telling people for ages. RAM speeds matters in CPU limited games.
Ishimura
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Ishimura
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Silent Knight
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SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
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AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
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post #4 of 402
Considering i'll be picking up a new laptop with a CPU as powerful as my 2500k, I think I'll just use my 2500k till it dies then use the laptop... 4.5GHz gets me <120 watts..laptop 6700HQ will get me the same multithread scores or better with ~35watt... Not really interested in dumping $400+ in a new chip, motherboard, and memory...
post #5 of 402
They are comparing it to Core i5 6500 which is the best Intel has to offer and losing 15-20% is no big deal. Also again AMD sucking 1080p with driver overhead.
Ishimura
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Silent Knight
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CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AVEXIR Blitz 1.1 16GB DDR3-2400MHz CL10 
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SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
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4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit LG OLED55C7P  Razer BlackWidow Chroma  
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eVGA SuperNOVA 750 G3 Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large 
AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
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Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
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Ishimura
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Silent Knight
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CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AVEXIR Blitz 1.1 16GB DDR3-2400MHz CL10 
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
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4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit LG OLED55C7P  Razer BlackWidow Chroma  
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AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
Audio
Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
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post #6 of 402
Considering i5 6500 boost with all cores loaded at 3.3ghz it looks like skylake have 39% better IPC vs sandy brige(4600Mhz sandy match stock 3.3Ghz i5 6500).If you want same performance as 4.6Ghz i5 6500 you need oc sandy bridge to 6.4ghz.
post #7 of 402
I just switched from a 2600k to a 6600k (soon to have a 6700k). CPU wise not super noticeable, 6600k is a bit slower rendering, but that was expected (which is why I am upgrading to the 6700k soon).The 6500k is noticeably faster in games at the same clocks as my 2600k (and same gpu). The ram is much faster though, and the m2 slot is excellent. The 2600k/2500k are great, but DDR4 and all of the new features of the current gen finally made it worth it for me to switch. Prices are good to
Edited by xlastshotx - 2/20/16 at 2:32pm
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post #8 of 402
Quote:
Originally Posted by xlastshotx View Post

I just switched from a 2600k to a 6600k (soon to have a 6700k). CPU wise not super noticeable, 6600k is a bit slower rendering, but that was expected (which is why I am upgrading to the 6700k soon).The 6500k is noticeably faster in games at the same clocks as my 2600k (and same gpu). The ram is much faster though, and the m2 slot is excellent. The 2600k/2500k are great, but DDR4 and all of the new features of the current gen finally made it worth it for me to switch.

Yes but some people have IVY + 2400MHz making the gap even smaller. The big this is 1080p. I left 1080p when I had a Core 2 Quad. I have been 1440p for 4 years and 4K now. 2500K OCed will feed even a Titan @ 4K. 4.6GHz also was easy OC for SB. Most did 4.8GHz and some 5GHz. If you are AMD in the other hand and still play 1080p its not good. AMD CPU overhead gets ignored because review sites use 6700K and 5960X.
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Silent Knight
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Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AVEXIR Blitz 1.1 16GB DDR3-2400MHz CL10 
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SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
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CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
CoolingCoolingOSPower
EK-FC7970 XSPC RS360 Windows 10 Pro 64-Bit Corsair TX750 
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NZXT Switch 810  
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Ishimura
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Silent Knight
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CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AVEXIR Blitz 1.1 16GB DDR3-2400MHz CL10 
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
CoolingOSMonitorKeyboard
4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit LG OLED55C7P  Razer BlackWidow Chroma  
PowerCaseMouseMouse Pad
eVGA SuperNOVA 750 G3 Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large 
AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
Audio
Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
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post #9 of 402
Why does he keep noting that the 3770k is a "drop in replacement' for a 2500k? Also I kinda laughed a little inside when people talk about not being able to overclock 390(x) to match gtx 970/980 levels when in truth all it really takes is around 1150 core vs 1500 core - the cpu overhead of 1080p and all.
Edited by Darklyric - 2/20/16 at 7:49pm
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samsung 840 256GB 500GB seagate some cheap asus  Thermaltake CLW0217 Water 2.0 Extreme/All-In-O... winduhs pro 64 
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ASUS VS Series VS247H-P Black 23.6" 2ms LED Ba... slick looking logitech for 50ish  RAIDMAX RX-1000AE 1000W ATX12V v2.3 / EPS12V S...  IN WIN Dragon Rider Black 1.0 - 0.8mm SECC Ste... 
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post #10 of 402
I wonder how the 3570K hold up i cant say for modern GPU's but i haven't had a bottleneck since i got rid of my AMD stuff
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