Long term affect of running 9600m/8600m gt GDDR3 memory at high frequencies? 900mhz - 1ghz+

Has anyone noticed any affects of running GDDR3 memory on a 9600 or 8600m gt at frequencies of 900mhz - 1ghz+ ? I ask because I have my FX 570M ( 8600m GT ) running 950mhz mem clock ( 1900mhz effective ) and although this is a 3d only clock I am wondering if going higher to 1ghz or keeping it at 950mhz is a bad idea as I cannot monitor the memory temps. The ram on this card is rated at 1ghz and combined with the fact that the vram is actually cooled on this card I was kinda hoping the affects wouldn't kick in for a year or 2

The memory in this 8510W does have a heatsink coverage so maybe that helps a little in terms of longevity.

It would be nice if someone been able to check and cross reference temps between stock and OC'd memory on an 8600m or 9600m gt with GDDR3 memory.

 

Any OC will have negative effects on longevity of the device being OC'ed. The additional heat will cause the device to ware faster. If you are noticing artifacts (visual anomalies) while playing you're clocks are too high, and your vram could be overheating. The same applies if your device fails and windows recovers it, or if your laptop BSODS with the over clock set (assuming you aren't running LINUX).

 

I'm sure if it stay within good temperature limit it doesn't wear much. Compare it to other 9600M/8600M temperature to be sure

Furthermore with 2D/3D mode on card nowadays it doesn't matter much, since it only run at that frequency in 3D mode so it would be cool and quiet when not gaming

 

I'm aware of increased wear and such when OverClocking I'm just wondering if the affects are above normal for these cards as in death in less than a year type thing although I know this varies but depending on the design of the power circuitry in any card the affects may be different and vary in the amount of time it takes for a failure.

 

Silicon, whether, CPU, GPU, or memory is sensitive to voltage and heat. Keep both reasonably low and it will have minimal effect on the lifespan of the part. You can keep temps low but if you have to crank up the voltage it can be as damaging if not moreso than temperature.

My rule of thumb is take it to stability and back off 5%. So if I can get the memory stable to 1000MHz, I'll back off to 950MHz. Or better yet whatever voltage the memory is stable at 1000MHz, say 1.600V for example, drop the voltage to 1.575V and run at max stable for that. This ensures a little safety factor, and most likely the longevity of your part by a decent amount.

 

I have nooo idea how to adjust the voltage for the vram on an FX 570M. I'm testing 1ghz in furmark atm and so far so good if this holds I'll prob drop it to 975mhz ish. These cards are pretty cheap on eBay at only $40 - $60 shipped so I guess if I do fry the card it's not a huge loss Prob gonna buy a spare just to have on hand anyways.

 

Memory is effected by more than heat. Running it above it's rated maximum MHz can damage it.

 

If 9600 is the same chip as 9800, only neutered, then oc'ing it to 9800 speeds is like running stock and nothing will happen to the videocard. You will be putting strain on your psu if it gets over the max wattage. In a desktop with a cheap psu the capacitors bulge or leak and this usually results in a fried psu and a fried mobo.

 

The 9600 is not just an underclocked 9800, they are completely different hardware. also, even if it was a lower clocked 9800, overclocking it would still wear on the chip. different quality silicon parts are selected for different chips, and higher quality parts will put out less heat / clockspeed. These things have a thermal range they need to stay within.

 

How? I can see if you're also overvolting it, but running it at faster clocks can't cause any damage. The worst that it'll do is crash. As long as you don't make the clocks permanent on boot, I'm not seeing any way to actually damage the hardware.

 

if i remmeber correctly , the memory on 9600M GT GDDR3 is at 800MHz so its a 25% overclock over that.. i would personally run on 900MHz at most.. in fact with your 8600M GT , i suggest 800MHz... OC the core and shader instead... memory is first to die.

Panther214

 

Why don't you check out Blackys guide:

http://forum.notebookreview.com/har...369470-how-find-your-real-gddr-frequency.html

If your chips are rated at 900 then 50mhz is not a big overclock, so its probably fine on the voltage side of things or whatever.
Any overclocking will up the temps tho, so just keep an eye on them.

 

Overvolting only effects the Core.

Memory chips have a fixed voltage, and can be damaged by pushing them too far beyond the manufacturer's rated maximum. Furthermore, there's no temperature sensors for the memory chips. So many people are happy that Furmark only pushes their GPU to 90C, not thinking about their memory probably being close to 100+.

I'm not saying it will always happen, but people are way too ignorant to the risks.

 

memory will not be damaged by the clocks its running at. Its temperature and voltage, and 99.999% of the time voltage is fixed.

Considering the heat put out by the core its likley the ram will be running at similar temperatures no matter what speed its running at.

 

There's a reason for why running your memory too high will cause artifacting, regardless of temperature.

 

Sooo, what you are and are not saying is that it will and will not cause any harm if I do or do not OverClock it as far as it will go or not go without artifacts?

Gotta love indecision I just bought another FX 570M off eBay for $25 shipped so I'ma go ahead and take this one as far as it will go on the ram and see if I can get another 25mhz out of the GPU as it maxes at 74*C during extended Fallout 3 sessions at 650mhz. Gonna try for 675/1450/1000 8600 GTS speeds , if the card goes *poof* I'll have a replacement and the system is under warranty for 4more months so eh.

= EDIT=

Memory runs 1ghz with no prob Prob won't push it past it's rated spec so I think Ima leave it here and see how it goes. So far the GPU hasn't gone past 76* C in Fallout 3 @ 1440x900 on High detail with HDR.