OC help w/ i7 5820k

[CoPhotoGuy]

I have an i7 5820k running in an Asrock X99 Extreme4.

I got it running at 4GHz at 1.175V with a Coolermaster Hyper 212 EVO.

Currently doing some Prime95 and max temps at the moment are 73°C.

I have been out of the overclocking loop for quite some time and have a question on some settings.

Right now the CPU is 4GHz but the cache is still 3.3GHz - should I match the cache speed to CPU speed?

 

[CoPhotoGuy]

Also, curiously Windows reports 3.3GHz still while CPU-Z says 4GHz. My old CPU would show the increased speed in the computer properties dialog.

 

[biostud]

I run my cache @ 3.5Ghz, CPU @ 4.3Ghz 1.3V.

Windows reports what the chipID says, CPU-Z what the chip is really running. I would recommend using OCCT for stability testing.

 

[escrow4]

Really don't use use Prime95:

http://www.overclockers.com/forums/...-CPU-s-and-you-is-it-bad-for-the-CPU-s-health

 

[CoPhotoGuy]

Really don't use use Prime95:

http://www.overclockers.com/forums/...-CPU-s-and-you-is-it-bad-for-the-CPU-s-health

I'm using an older version.

 

[CoPhotoGuy]

I run my cache @ 3.5Ghz, CPU @ 4.3Ghz 1.3V.

Windows reports what the chipID says, CPU-Z what the chip is really running. I would recommend using OCCT for stability testing.

Ok I might up the cache some.

Never went over 73°C and I had Prime95 running with RealBench at the same time.

I don't care to overly tax the air cooling. Idle temps are around 32°C.

HW Monitor shows CPU at 141W power consumption maxed out as well so I don't see the need to push it anymore. 4GHz is fine with me.

 

[Lepton87]

I can run my cache at 1:1 ratio with core frequency at least to 4.3GHz I haven't tried more because it overheats on AIR cooling but I think it's only possible on Asus boards. Other boards let you clock the cache to around 3.5GHz. Hwavy OC really requires a WC cooling, I spent 600$ on mine and I still can't use it. I could buy 5960X and cool it with air for that kind of money but I plan on keeping my WC for at least a few CPUs.

 

[Lepton87]

Ok I might up the cache some.

Never went over 73°C and I had Prime95 running with RealBench at the same time.

I don't care to overly tax the air cooling. Idle temps are around 32°C.

HW Monitor shows CPU at 141W power consumption maxed out as well so I don't see the need to push it anymore. 4GHz is fine with me.

Yeah right 141W, that's BS. Just buy a wall meter and then check my CPU can gobble up in excess of 400W.

 

[toyota]

Yeah right 141W, that's BS. Just buy a wall meter and then check my CPU can gobble up in excess of 400W.

there is no chance your cpu uses over 400 watts.


screenshot tool

 

[CoPhotoGuy]

Yeah right 141W, that's BS. Just buy a wall meter and then check my CPU can gobble up in excess of 400W.

By CPU I mean the actual CPU. Not the entire computer. If my CPU was using more than 400W it would be dead.

 

[Ajay]

there is no chance your cpu uses over 400 watts.

Wall meter == system power consumption, obviously.

 

[toyota]

Wall meter == system power consumption, obviously.

well of course but he is meaning just stressing the CPU. as you can see in my pic just fully stressing the cpu would pull no where near 400 watts and is not even quite breaking 300 for system.

 

[Lepton87]

well of course but he is meaning just stressing the CPU. as you can see in my pic just fully stressing the cpu would pull no where near 400 watts and is not even quite breaking 300 for system.

Stressing the CPU adds over 400Wats to the power consumption from the wall, of course that's before PSU efficiency, VRM's efficiency etc. So it would probably be somewhat north of 300W. And that only happens in AVX2 loads, X(264) encoding consumes easily over 100 watts less,maybe even 150W. X264 is so much lighter than AVX2 load that's not even comparable. Totally different temps and power consumption numbers. Your pics has nothing to do with anything, at X264 encoding my CPU consumes something around half the power it can gobble up with AVX2, asus even discourages using such tests. The power consumption with AVX2 almost double, when I get home I can provide the exact numbers. But from what I remember it's slightly over half the max power consumption.
HW-E is really capable of gobbling up around 400W on its own in AVX2 stress tests.
http://hardforum.com/showthread.php?p=1041243126

One guy also says that HW-E can gobble up to 400W under heavy OC and AVX2. I invested 600$ into watercooling, AIR just couldnt handle it.
ps. obviousely we are talking about different things, what I had in my is how much power a HW-E can be made to draw under unrealistic power viruses and you butt in with measurements made with an application that makes the CPU draw half the power if not less then under maximum power consumption. What does that prove? Apples to oranges.
1.4V and 500W here they come It's a shame that VRM are integrated and I don't trust them as much as i would trust those on a ROG board. Maybe when I finish my WC I'll see if the CPU can draw 500W. 1.285V is enough to increase the power draw from the wall by over 400 so 1.4V must really make it a power consumption champion and here I thought amd's 95xx series were bad.