My Overclock, how much is too much?!

[zulfy26]

My Overclock - Why isn't it stable?

With the hard ware from this thread:
http://www.ocforums.com/showthread.php?t=393057&page=1&pp=30

Heres some results.
3Dmark05, 8800
3Dmark03, ~13k
3Dmark01, 28000

2 BFG 6800GT OC's with their new arctic silencers

An Asus SLI motherboard

highest we got into bios, didn't go any higher for fear of death.

A Tt Armor case. I didn't do any cable management because we wanted to turn it on and play around.

Ok now about the overclocking factor. We could get into Windows at ~2.9ghz, but P95 would crash (read: error) after about 2 minutes.
We'd try something to the jist of... 240x12 @ 1.6v, with ram at 2-2-2-5 @ 1t @2.9v. If we loosened timings it wouldn't get any more stable. Or if we tried something like 330x8, it woulnd't be any more stable.

What do I need to change to make it any more stable. I looked at the CPU database and with a 4000+ SD the best was 2.9 or so on water, so I guess i'm happy with a 2.7 stable on air.

 

[zulfy26]

bumped up top, anyone see this?

 

[Know Nuttin]

lower your Hypertransport Frequency to 4x

 

[zulfy26]

What exactly is Hyper Transport? During the stable OC it was at 3 or 4x.

 

[techun]

i think u dont want it to total over 1000, so if your fsb goes to 250, put it to 4x
i think it connects cpu to pci-e? maybe not, lol

 

[jcw122]

The Hyper Transport Frequency multiplier is actually called the LDT. It stands for Lightning Data Transport (how cool is that!) What it is, is for connections outside the CPU, as in ur CPU to ur Chipset, ur Chipset to AGP/PCI-E, Chipset to _____, CPU to _______. Basicly it's what FSB is, but it's alot bigger, and isn't technically FSB. Anyway, I've seen benchmarks and raising the LDT does about nothing for performance.

So what you want to do, is keep this setting as low as u can because it will give your ALOT of stability. But if you can pull it off, try keeping it raised, but w/ out killing stability. What I mean is 1x will prove most stable, but if u can use 2x w/ the same stability, use it.

So basicly, lower that LDT's *** down to 1x and see if stability increases!!

 

[zulfy26]

Ok, i'll try that.

 

[zulfy26]

I just got into the Bios at 4.8ghz.

vcore = 1.625
ddr = 3.0
12x400

 

[Scott9027]

4.8 GHz on a A64 4000+ Can we see a screenshot?

 

[crash013]

Yeah show us a CPU-Z screenie.

 

[Paul1]

Yeah show us a CPU-Z screenie.

He said the BIOS, not Windows.

 

[jcw122]

He said the BIOS, not Windows.

Just because he got into BIOS doesn't make it stable what so ever, so until he gets into Windows, passes P95 and other stress tests, shoots all those shots plus a CPU-Z shot, it's not stable nor believeable.

And yeah, I understand people do cheat by editing their screenies