PCI(AGP) lantency tool...

[Terra]

While I was reading up on Guru3D.com, I stumbled over this little program:
PCI Latency Tool 2.3

Utility to set PCI Latency and possibly prevent game stutter or improve FPS.

This tweak is an important one, and one well worth checking into. Apparently, newer high-end video cards hog PCI latency for no known reason. This makes other components wait for access and causes stutters and thus lower frame rates. If you adjust the latency this might benefit you, users are reporting big improvements.
You can download this small utility program that allows you set your PCI latency. Adjust the PCI latency from for example 248 to 64, and there's a very good chance of stutter free performance & sound.

STEP 1. open the pci latency tool
STEP 2. Rightclick on your graphics card and click change setting(s)
STEP 3. change to desired setting and hit ok
Step 4. click settings and select apply at startup so it has a tick next to it
STEP 5. click settings and select save so everything you have just done is saved
STEP 6. right click on your video card and click quickset latency (if you want to set it straight away).

More information and user experiences can be found in this forum thread.

Link to the forum thread: Click me


Terra - Just though I would share with the [H]ard

 

[Chris_B]

I installed that thing and 3d mark kept shitting out on me. Would get midway through a test then just dump to desktop whereas before it was working fine.

 

[Terra]

3Dmark is not a game...

Terra - Did you try more than one(64) setting BTW?

 

[Chris_B]

3Dmark is not a game...

Terra...

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Don't rememer saying it was, but if it does that for me id assume it does it for others who might be wondering whats causing it.

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... <-- lastest interweb gimmick everyones picking up on

 

[Chris_B]

Terra - Did you try more than one(64) setting BTW?

Just the 64 setting. Just removed it after that.

 

[fodder0]

so will this create other programs not to work?

 

[USMC2Hard4U]

It is known that Creative Cards like 64 PCI cycles. I set my PCI latency in the BIOS from 32 to 64 cycles. Sure it is double the latency but on creatives in depth FAQs they say that More Information can be gathered before the packet is sent when setting to 64 clks.

So I always do, and never have a problem. Sometimes if I have it set to 32 and forget about it, when I had a single core CPU (no HT or dual core) sound would crackle under extreme load.

 

[4keatimj]

Ummm, you can change the latency in the BIOS, and it is the same, yeah? Generally 32 or 64 gives the best performance overall. But, unless you need to adjust it in realtime, you just change it in the BIOS and it will give you the same results.

BTW Chris_B, it may be the program running resident, and accessing RAM or IRQs, or even changing accessing critical mobo parts like the latency and causing it to crash with no warning... maybe?

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