Which X79 Overclock Settings Should I Use For Crysis 3?

[KedarWolf]

Hey,

I have an I7 3820 in a Sabertooth X79 motherboard. Right now I am playing Crysis 3 which utilizes hyperthreading well from what I've read. When overclocking I can run my CPU at 4.5 GHZ with blck at 125 and Turbo off with hypertheading on at 1.40 CPU voltage stable testing with Prime95. My DDR3-2400 runs at 2333 MHZ though with the XMP #2 profile enabled. I can run at 125 blck with Turbo on at 47 for 4.625 GHZ with hyperthreading off at 1.38 cpu voltage stable tested with Prime95. My DDR3-2400 runs at 2407 MHZ with XMP #1 profile enabled. The only other hyperthreading enabled option is my blck at 100, Turbo at 44 for my cpu at 4.4 GHZ, my memory at 2400 MHZ using XMP #1 profile with my cpu voltage at 1.36 stable in Prime95. I use a Corsair H100i water cooler and my cpu and vcore temps at all three settings never get above 55C.

Any ideas?

Peace, KedarWolf.

update/
Correction, my CPU temperatures are around 60C with the 1.40 cpu voltage using HWMonitor, the readings in ASUS Probe were lower but I read it can show the wrong temperatures, hence using HWMonitor instead.

 

[Master&Puppet]

CryEngine3 is suppose to manage multiple threads although I'm not sure how well HT is managed in game.

What GPU are you using? You'll need a powerful multiple card setup to force a CPU bottleneck in FC3 otherwise there will be no difference in performance between your CPU overclocks.

 

[KedarWolf]

I use two MSI GTX 680's Twin Frozr 4GB/OC in SLI.

update/1
I finally decided to use the 100 blck with 44 ratio for 4.4 GHZ with hyperthreading on as it is Prime95 tested stable at 1.36 voltage on the
CPU. I had to go to 1.41 voltage at 4.625 GHz with hyperthreading on to get it stable in Prime95 and the CPU temps were hitting 65C even with my H100i water cooler fan settings at max. Now my CPU doesn't go over 60C and I use 'Regular' LLC settings and much lower Vcore voltage as well etc. I checked in MSI Kombuster and my GPUs are running at 99% in the stress tests so I don't think my cpu is throttling my GPUs. I don't think running at 4.625 GHZ with 1.41 voltage is a good idea even though my CPU temps stay under 65C. I think my Vcore temps get much higher, (they show 10C higher in Asus Probe) and I'm not exactly sure what the Vcore temp is in HWMonitor but I know in Asus Probe if my CPU temp says 60C HWMonitor says it's 80C so I'm afraid the Vcore is getting too hot with LLCs set at High and 120% Current Capabilities etc. Does anyone know which temp ids the Vcore in HWMOnitor by any chance? And do you think if my Vcore and CPU temps stay 65C and under I can run LLC on High, 120% Current Capabilities and VTTCPU VCCSA voltages at 1.100? or am I tempting the gods?

update/2
Oh, I think I have the blck and strap at 100, I read it might be a good idea to leave the blck at 100, raise the strap to 125 and overclock from there. Good idea? I think I'm going to see, try it.

update/3
That never worked, I changed the blck to 125 strap changes to 125, change the blck back to 100 and leave the strap at 125, same overclock settings as 100/100. :/

update/4
Overclock at 4.4 GHZ in bios not as good as I thought, in bios says the blck and strap are 100 and ratio is 44 for 4.4 GHZ but in Asus Probe and CPU-Z says it's actually at 4.3 GHZ with the ratio at 43. But I thinking is better then 4.625 GHZ with a really high 1.41 cpu voltage and much higher LLC and Current Capabilities etc.

So, unless I get better advice here I'm going to stick with 4.3 GHZ, hyperthreading on, low voltages knowing my GPUs are not being throttled.

 

[Master&Puppet]

Using the strap (usually at 125) is a very common way of overclocking your chip - you'll be limited at what speed you can get without it because you have a locked range multiplier.

The only way to test if HT is working in FC3 is to set 4.3GHz (or another speed) and try it with HT on and off - see if you can measure the difference in FPS. Even with 2 680s I think you'll still be GPU bound before CPU though.