Intel Ivy Bridge i5-3570K & i7-3770K Review

CPU by leeghoofd @ 2012-04-24

Time seems to fly. Just over one year ago Intel introduced Sandy Bridge to the world. Packing a high performance CPU, with mega overclockability for the K skews, yet keeping power consumption and heat to a bare minimum. The best part was that Sandy Bridge was affordable and even a big threat to Intel's flagship, the socket 1366. World records were smashed at HWBot, as this little socket 1155 CPU overclocked to 5.8Ghz and beyond. The instructions per clock were way faster then anything we were accustomed too. End of last year, it was time to replace the aging socket 1366 by Sandy Bridge-E. The socket 2011 has big potential with it's quad channel RAM support and multi GPU excellence via 40 PCI-E lanes. But the overall clock speeds of the SB-E were disappointing. Most CPU's don't even go over 5500mhz on cold. Today we are gonna introduce the "Die" shrink of the little affordable Sandy Bridge CPU's : Codename Ivy Bridge

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Intel i5-3570K and i7-3770K

The Ivy Bridge i5-3570K is the sucessor of the popular i5-2500K Quadcore CPU. Besides the 22nm fabrication, the 3570K sports 100MHz extra core clocks. The i5-2500K runs at 3300MHz and with the Turbo at 3700Mhz. The IB 3570K has 3400MHz at it's disposal, plus a turbo topping at 3800MHz. The Level 3 Cache has remained at 6MB. With the pure speed advantage, the Ivy Bridge CPU should have no problem trashing the i5-2500K in our stock test suite.



The i7-3770K has got the duty to replace the i7-2600K CPU. Sporting similar clocks however as the i7-2700K, being 3500MHz and 3900MHz Turbo clocks. Take the extra speed into consideration for both the IB results when looking at our stock charts. Best is to compare the i7-3770K straight with the i7-2700K, as it's pure clock per clock then.




With each press kit, Intel includes one of it's own boards for testing purposes. Sadly the "Casper" board was not really cooperating. Any change in CPU multiplier, RAM divider,... resulted in an overclock failed scenario. With the latest 0035 bios we got up to 4800MHz and 1866 RAM speed by using the new Virtual bios. With the Classic bios mode selected, the 2133Mhz ram divider was the max we could go. For the rest everything worked fine. But as we wanted to conduct more profound tests we were obliged to swap the board for the Gigabyte Z77X-UD5H.



  • Intel Core i5-3570K & i7-3770K
  • Thermalright VenomousX Cooler
  • Gigabyte Z77X UD5H (F5 bios)
  • 4GB Corsair Dominator PC12800C8
  • NVIDIA GTX480 (WHQL 290.62 driver)
  • Western Digital 1TB Green Caviar
  • Corsair TX 850 PSU
  • Cooler Master CM690 II Advanced case
  • Windows 7 Professional 64Bit SP1 fully patched


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Comment from Teemto @ 2012/04/27
How about the issues with the heat spreader?
Maybe better to wait on buying one till Intel addresses this issue and switches back to the paste used in SB. If they plan to do that at all?
Other option would be to tear off the heat spreader but I'm not going to risk that on a 300€ CPU
Comment from leeghoofd @ 2012/04/27
Maybe Intel will correct it but I doub t it as for 24/7 there's no problem,
These CPU's are screamingly fast for daily usage and gaming. For benchers LN2 is the only way to go. Removing IHS for LN2 benching is too risky in my book...
Comment from Stefan Mileschin @ 2012/04/27
I am waiting to see some retail CPUs benched on air with the HSF removed
Comment from nigel @ 2012/05/01
except for the litle issue with the ihs and such these look just great.

I just hope to see more results with retail samples and modified ihs. Like lapping, no ihs, remounting ihs...

But nonetheless this is my next upgrade

Also nice write up once again