Overclocking with Radeon X1800 XT

[Sampsa]

Ok, alot of people requested information about Radeon X1800 XL so I did some testing tonight:

Radeon X1800 XL:
GPU: 1,08 V
Samsung 1,4 ns memory: 1,88 V

Radeon X1800 XT:
GPU: 1,31 V
Samsung 1,2 ns memory: 2,07 V

Updated the memory information, Radeon X1800 XL has Samsung 1,4ns chips

XT has 1,2 ns rated chips and XL has 1,4ns chips. They also work with different voltage. XT's GPU was manufactured on 0537 and XL on 0539. Some of the markings different a little bit on GPUs.



I installed XT cooler to Radeon X1800 XL, raised the GPU voltage to 1,31V and tried if the GPU could run at XT's clock frequency (625 MHz).



Well, it did and alot more better than that! Radeon X1800 XL running with XT's default voltage I got the GPU running at 705 MHz. Unfortunately I don't know yet how to raise the memory voltage so I just overclocked memory with default voltage (1,88 V). Memory ran fine at 705 MHz (1410 MHz) without artifacts. FX-57 running default gave me 9175 in 3DMark05.



I measured the temperature from voltage regulation components which was around 58 C. Radeon X1800 XT is about the same.

In my opinion it looks like these Radeon X1800 XLs are pretty much the same as Radeon X1800 XTs but running with lower voltage. XT's 1,2ns memory might overclock better. Looks good for overclockers!

Now I'll just enjoy a couple of beers and relax!