AMD Radeon HD5870 low hash rate, under 250Mhash/s

[Reinikainen]

What I have seen, it should be more like over 350. Overclocking didnt change the rate at all.

I'm using GUI Miner, am I doing something wrong in here? Drivers are up to date.

[crazyates]

Step 1: Give us more info: What OS are you using? Driver version? SDK version? What settings are you using?

I use CGMiner, and my 5870 gets ~460 @ 960,300

[Reinikainen]

Windows 7 x64

P: Core 2 Quad 9400
R: 6GB RAM
G: Radeon HD 5870
M: ASUS P5K

In GUI Miner I made New Phoenix miner.

Hash rate about 230.

[crazyates]

What driver and SDK are you using?