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Old 10-14-04, 10:15 AM   #1
Daneel Olivaw
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Default MSI 5900XT Lower overclocks with time

Using stock latencies, I used to run my 5900xt at a memory clock of 770 for 6 months, then it got unstable I ran at 740 for 3 months, now its stable at 720...

I did run it at 830 with latency mods, thats with not cooling whatsoever on the memory chips, 830 was 3 months ago.

Can ram get damaged in such a way that it overclocks less?? To me that makes no sense, either it works or it doesn't...

My core overclocks more nowadays, 470 was the max, now its 480...
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Old 10-14-04, 01:51 PM   #2
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Default Re: MSI 5900XT Lower overclocks with time

Maybe its the weather. I dont know where you are at, but lots of people have to turn their overclocks down when it gets warmer out.

Its fall here, so I should be cranking mine up again soon (heh heh) but if its just getting to spring somewhere else, people will have to start throttling down.

Though I dont know if itd be that extreme... that is strange, ill tell you that much
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Old 10-14-04, 02:13 PM   #3
Daneel Olivaw
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Default Re: MSI 5900XT Lower overclocks with time

Damn, I underclocked my video ram and Max Payne 1 still hung up...

When I lower my FSB (CPU and RAM) it doesn't hang up anymore... damn, that FSB has been 100% stable for a year! (sig)
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Old 10-14-04, 04:40 PM   #4
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Default Re: MSI 5900XT Lower overclocks with time

Quote:
Originally Posted by Daneel Olivaw
Damn, I underclocked my video ram and Max Payne 1 still hung up...

When I lower my FSB (CPU and RAM) it doesn't hang up anymore... damn, that FSB has been 100% stable for a year! (sig)
Is your AGP fsb always locked at defaults of 1.5v and 66MHz. If answer yes, then only slightly better suggestion is to set AGP volts to 1.6-1.7. With some mobo's/cards combinations and under extra loading from overclocking, the agp volts can get a tad low, or variable, for good graphics stability.

Also, when you start to see overclocking and stability getting worse, its a good thing to check all PSU and card/mobo interface connections since over time you get slight deterioration of contact surfaces and this obviously can affect stability.

Too many of us nowadays are overclocking everything without realising that apart from pushing our PSU's closer towards instability and shutdown issues, we are causing more and more slight drops in important PSU lines. These drops in volts will in turn have knock-on effects to the stability of CPU/GPU/DIMM/DDR inter operations.

And as has been said many times, poor case cooling can also have quite dramatic effects on any overclocking and stability. This can sometimes be down to either, failing/blocked fans where the problem creeps up on you, or, weather related which is usually more dramatic and is thus more obvious to the cause.

Unfortunately from my meagre comments, it can be seen that the kind of problems you have been having can be caused by a multitude of inter related things. It will therefore be most interesting how you finally resolve your current problems.
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