CPU bottleneck with GTX480 (x2?)

[Zoeff]

Well, I got myself an i7 920 with a P6T Deluxe V2 (the eVGA one was out of stock). Managed to overclock it from 2.6Ghz to 3.15Ghz using the cooler that came out of the box.

Thanks for the advice, can't wait to get a much bigger cooler!

 

[aigomorla]

For that $$, why don't you just buy a Ferrari instead?

uhh... maybe some people just want a badass computer like i do?
I think my setup is greater then his.

Not to mention a 3x 480 + your system is going to require a 1200W or higher PSU (if the rumors are true). That is one hell of an energy draining system!

That i can see as being true.

I was just showing that a core i7 @ 3.7 will push 2 5970's easy, therefore the GPU is the bottleneck. That was the op's question.

Except I used 5970's instead of gtx 480's

Actually video cards will scale upwards past 4ghz.
The 285GTX your FPS rates keep on going up even past 4ghz.
Clock speed = Max Frame rates.
Gpu = min frame rates

Well, I got myself an i7 920 with a P6T Deluxe V2 (the eVGA one was out of stock). Managed to overclock it from 2.6Ghz to 3.15Ghz using the cooler that came out of the box.

Thats a big step down from your original post.

You are aware that P6T isnt even a true 3x16 board right?

 

[Zoeff]

You are aware that P6T isnt even a true 3x16 board right?

I'm aware of that, forgot to say so. 1200+ watts just isn't worth it so I'll get 2 at most.

Any other downsides this mobo has that I should be aware of?

 

[Shmee]

I am not sure, but it might have an issue with turbo throttle at load.

Also, what is the vdroop like on that board? UD5 seems to have a fair amount, even with LLC enabled.

 

[SHAQ]

Wait...isn't vdroop supposed to be good? lol There was a post awhile back that argued such.

 

[aigomorla]

Wait...isn't vdroop supposed to be good? lol There was a post awhile back that argued such.

not for the average user. Like sub 1.4vcore

For the bencher tho yes.
Like 1.5Vcore+

 

[tweakboy]

Yes a big bottleneck with dual, and if you have it OCed then thats a bit less bottleneck.
But still your not getting all the frames per second you would get if say you had a Q8000 stock speeds.
The 480 with 275 watts draining is not a good fit with your X2 , You need more powerful CPU to get all the frames per second that nVidia wants us to get. gl

 

[Zoeff]

I am not sure, but it might have an issue with turbo throttle at load.

Also, what is the vdroop like on that board? UD5 seems to have a fair amount, even with LLC enabled.

That goes beyond my expertise, what exactly is vdroop? I can tell you that CPUz reports my core voltage being v1.208 volts..

 

[DrMrLordX]

That goes beyond my expertise, what exactly is vdroop? I can tell you that CPUz reports my core voltage being v1.208 volts..

vdroop is used to describe the phenomenon of listed voltages (as measured by CPUz, for example) falling below those set in the BIOS. Sometimes certain conditions, such as loading up all the cores on your CPU, can exacerbate vdroop. Both motherboards and power supplies can be sources of vdroop.

As a general rule, the more voltage you push through a component (vcore, vdimm, etc), the more chance there is for vdroop.

 

[Zoeff]

Hmm, what's a good free program that I can use to strain all cores at once?

 

[jvroig]

Hmm, what's a good free program that I can use to strain all cores at once?

Prime95