Oc 8800's

[Jon G]

I am looking for some info on OCing sli 8800'S?

 

[pt]

I am looking for some info on OCing sli 8800'S?

ask H20

 

[Jon G]

ask H20

OK

 

[HeavyH20]

So, what did we need to know about OC'ing the cards? Or, are we talking about the whole system, as well?

For the cards, I simply use the NTUNE program. It works fine for OC'ing the cards and it works great if you have a 680 board. What specifics are you trying to discover?

 

[Jon G]

So, what did we need to know about OC'ing the cards? Or, are we talking about the whole system, as well?

For the cards, I simply use the NTUNE program. It works fine for OC'ing the cards and it works great if you have a 680 board. What specifics are you trying to discover?

Well my mobo is a peice of crap. I'm going to return it tomorrow for the 3rd time. 1 mem slot dose not read and now my ide port dosent work. But thats ok when I got the board I was not going to do sli. I think a sli mobo will better sute my needs. So what board do you think I should get? I'm looking at these NVIDIA nForce 600i Series and Asus P5N32-E SLI do you know eany thing about those boards?

 

[HeavyH20]

Well, if you run one card, the 570 series is decent on the AMD front. For Intel, the 680i is a good choice and it supports SLI if you decide on that down the road. Easy to OC, as well. I really like my EVGA 680i boards.

And to OC the cards, use ntune. There are some gotchas on the cards, however. First, turn off linkboost. It locks ups the cards hard when you reach the limits. I set the PCIe speed manually to 120, instead. With a dual core, set your FSB to 1333 to start and play with the multis. As you push the limit, ad 50 MHz at a time.

The fan control does work, you just have to set it twice. Or, simply use RivaTuner or ATITool. 8800GTX cards normally do 630/990 and GTS cards 600/900 as a good start. Slowly up it from there, and you shoudl find your ceiling.

As for memory FSB, I found that lower speeds with lower latency are every bit as good as high speed high latency. So, 800 with 4-4-4-12 is the smae as 1000 5-5-5-15 mostly due to the 1T capacity at lower speeds. 1T starts failing around 900 MHz.

Voltages on auto work fine until you push FSB. Then you will want to up the HT voltage and drop it down from 5x to 4x or so.

That should get you started.

 

[Jon G]

Asus P5N32-E SLI

Well I got my Asus P5N32-E SLI board today and its running good. Over clocking little by little and every things going well. The 8800s run a lot better with the 680i chipset.

 

[Jon G]

Well I got my Asus P5N32-E SLI board today and its running good. Over clocking little by little and every things going well. The 8800s run a lot better with the 680i chipset.

By the way check out my specs that mite help you to know what I am working with almost the same setup you have. I did my cooling recerch first becase I knuw I would just run it to cooling ishuws down the road. I am runing a 1/4 hp water chiller for cpu,chipset and video cards ram and hard hrives not on chiller.

 

[HeavyH20]

Actually, I did check out your specs. And, they thought I went overboard building my PC.

 

[jacky89]

Well, if you run one card, the 570 series is decent on the AMD front. For Intel, the 680i is a good choice and it supports SLI if you decide on that down the road. Easy to OC, as well. I really like my EVGA 680i boards.

And to OC the cards, use ntune. There are some gotchas on the cards, however. First, turn off linkboost. It locks ups the cards hard when you reach the limits. I set the PCIe speed manually to 120, instead. With a dual core, set your FSB to 1333 to start and play with the multis. As you push the limit, ad 50 MHz at a time.

The fan control does work, you just have to set it twice. Or, simply use RivaTuner or ATITool. 8800GTX cards normally do 630/990 and GTS cards 600/900 as a good start. Slowly up it from there, and you shoudl find your ceiling.

As for memory FSB, I found that lower speeds with lower latency are every bit as good as high speed high latency. So, 800 with 4-4-4-12 is the smae as 1000 5-5-5-15 mostly due to the 1T capacity at lower speeds. 1T starts failing around 900 MHz.

Voltages on auto work fine until you push FSB. Then you will want to up the HT voltage and drop it down from 5x to 4x or so.

That should get you started.

What version of ATitool are you using? I'm using version 0.26 and I dont even see a fan control option for my 8800gts