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The GIGABYTE Z87X-OC Review with 4770K - Page 3

post #21 of 78
Thread Starter 
haswell's memory OC isn't limited by the IMC persay (most should go to 4k with single sided hynix MFR), just everything else especially memory. IMO raise the system agent voltage to +0.2v and the CPu IO analog and digital to +0.15v to remove anything the IMC might hold you back.

Heads up also CPU Ring voltage helps with stabilizing the CPU and Uncore frequency. Also uncore frequency over 4.7ghz on air can cause instability without extra ring voltage, however uncore has a stupid bottleneck(it is the cache's frequency which used to be tied to the CPU frequency) After 4.5ghz it is best to take it upto 4ghz for 4.5-5 and then over 5 you should go higher. Then around 6ghz CPU id try 5ghz uncore and the 7 ghz CPU id try closer to 6. However right when you undo the uncore bottleneck, the performance doesn't increase if you increase the uncore frequency.

Don't use 1.67x divider with memory OC, but do use 1x or 1.25x they are optimized. in gigabyte UEFi tRDRD is tRRSR this can help maximize frequency. Cold really helps as well. Haswell loves hynix more than anything, all those really high clocks you see are all on single sided hynix on LN2 lol. Expect better than Ivy for most, PSC will goto 2666-3k or even above, BBSE will too, you just need golden sticks like what everyone is posting with. 4DIMM OC is also pretty damn good, however haswell adds in many extra settings for memory, it takes time to learn how to OC the memory on the platform, that is why there are profiles.
Edited by Sin0822 - 6/2/13 at 7:25pm
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post #22 of 78
That's a great price for this board.
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post #23 of 78
Quote:
Originally Posted by PureBlackFire View Post

That's a great price for this board.

Agreed, $200 seems cheap for all the features. Is there a reason that the UD5H is priced higher?
 
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post #24 of 78
Thread Starter 
Bullant- your gonna hev fun with PSC on the board. There is already a 2666psc tight profile in there! haha
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post #25 of 78
That UEFI interface is just so damn sexy.
post #26 of 78
Great review! thumb.gif
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post #27 of 78
Nice review!

5.0GHz is possible but it hit the TJmax of 100C and throttled down the frequency.

post #28 of 78
I got some Perfect Storms that are dying to be spanked with Haswell... lachen.gif
    
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post #29 of 78
Thread Starter 
yup but that is my early ES sample, with intel's 3d transistor it seems they are constantly making improvments in the production process, notice the latest Ivy Bridge CPus OC better than the early ones did? Same will happen with haswell. Also I wasn't even using very good cooling, just a Spire Dark night and a Gelid blue fan which only goes to 1500rpm and i guess 60cfm lol. So I think 5ghz with benching stability is possible on air, basically same as Ivy bridge. Really the OC potential here IMO is same as Ivy on air.
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post #30 of 78
I stopped reading when I saw this.
Quote:
Welcome everyone! NDA has been lifted for most and now I am posting my first Haswell review featuring the 4770K. Haswell has had a lot of hype and some early leaks which led to early disappointment; however the CPU itself isn't that bad. Unlike AMD, Intel actually is improving performance (even if it is only slightly) and adding new features. The CPU now has a built in voltage regulator, now this VRM takes an input voltage (default is 1.8v and up to 3v) and then reduces that to different voltage rails. This makes the motherboard VRM's job a lot easier as reducing 12v down to below 1v results in extremely low duty cycles which can stress out components. Another feature I really like is something called Flexible I/O which means that the PCH can allot its PCI-E lanes into USB 3.0 or SATA6G. So by default the PCH can support up to 8 PCI-E 2.0 lanes, 6 USB 3.0 ports, and 6 SATA6GB/s ports. However you have to pick and choose. For instance you can have 6-6-6 (USB/PCIe/SATA) or you can have 4-8-6(USB/PCIe/SATA). Those are the two combos we see most often, the Z87X-OC uses the 6-6-6. Now we will begin to review the real successor to the X58A-OC: the Z87X-OC.

I am no fan of AMD chips, but that statement is just false and misleading.

Regardless, looks like a good board.
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