[OceanSide08]

This has always been a huge mystery to me and I've yet to find a real solid answer.

Why is it some 8800 GT's come stock at 700Core/2000Mem and some at 650Core/950Mem.

It's like 1 has twice as much memory capabilities as the other.

I personally have the 650/950 stock model, and everytime I hear people claiming they OC to like 750/2100, my jaw just drops because I can barley even get a memory clock past 1000.

So can someone PLEASE clear this up for me as to why such the HUGE difference between the same modeled cards (8800GT)

 

[ryanrenolds08]

The 950 memory is 1900DDR. So they overclocked the 950DOUBLE DATA RATE to 1050 which is actually a decent OC for an 8800GT.

Your card is just fine bud. Its actually running at 1900.

*edit*

As far as the core is concerned some say that the best ones are 'binned' but I think they take the same cores and pre-overclock those for a premium for those who don't want to or are too afraid to do it themselves.

 

[Sgtbash]

Lol, ultimate noob question, that aside, people just double their ram figure because that is what ram operates at.

 

[OceanSide08]

Haha thanks guys now I finally know. And I thought I remembered something about that double data rate thing somewhere. Sounds familiar now.

 

[Lukeatluke]

DDR2/3 ram is double pumped so->
900 makes 1800Mhz,
1000 makes 2000Mhz.

And yes, that's misterious, i bought 600/900 and i can oc it to like 800/2060.
Proof

Other question is why atitool artifacts anything above 770/1677/2050, when games doesn't

 

[Butterbum]

Memory overclocking in cards is pretty useless anyway. Just sucks up power.

 

[ryanrenolds08]

Quote:

Originally Posted by Lukeatluke DDR2/3 ram is double pumped so-> 900 makes 1800Mhz, 1000 makes 2000Mhz. And yes, that's misterious, i bought 600/900 and i can oc it to like 800/2060. Proof Other question is why atitool artifacts anything above 770/1677/2050, when games doesn't

ATI tool pushes your GFX cards as far as they will go and detech ANY thing out of the ordinary.

The same principal works with an OCd proc. I can run my quad at 3.8 and get into windows just fine but when the gaming comes along (the cpu equivilent of ATI tool) it stops working.

ATI tool is a great way of detecting artifacts.

 

[ryanrenolds08]

Quote:

Originally Posted by Butterbum Memory overclocking in cards is pretty useless anyway. Just sucks up power.

Well adjusting core and memory need to be correlated because you are only as fast as your weekest link. True, the core speed will gain the most boost but adjusting that core speed along with the memory will yield the highest performance.

Overclocking ONLY the memory has minimal gains.