Arctic Cooling Accelero x2:
 

We increased the clocks of the X1800XL to where but us 554mhz in GPU and 563mhz in memory could be stable that is single, which us left us so you conform, so we took advantage of kindness the this Radeon but the utility developed by w1zzard , the ATi Tool, to increase a little the voltage of memos (1.922V) and GPUS (1.125), thus to obtain temperatures a little but high. Once we obtained that the VGA will be left but hot, we came to testear with which we obtained differences but surprising still... in rest this breach arrived at 9º, but in full load we obtained with Accelero x2 nothing less than 21º (22.3%), which if it surprised deveras to us.