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Who has OCed an RD580 northbridge?

post #1 of 4
Thread Starter 
I have read that they are stable beyond 1500 MHz (300 HT), so you don't have to worry about changing the multiplier from 5X to 3X. I'm wondering if running mine at 1500 will yield any Crossfire performance.
Anyone tested this yet with Crossfire (or single card for that matter) on the RD580 or RD480? I have the RD580 Xpress 3200
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PWNzershreck
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post #2 of 4
Maybe if you run 'softfire' you MIGHT see a performance benefit from a higher HTT bus speed. Otherwise, not really. All I've ever seen from higher HTT buses is a memory stability increase. (mostly tighter subtimings at slightly higher speeds) I could only prime 5Mhz faster on my BH-5 1.5-2-2-0-1T on my NF4 but I was able to pull another 2 clocks tighter max async latency as well as another two points better read preamble. Doesn't sound like much but I'll sure as hell take the extre FREE performance.
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post #3 of 4
For me running at HTT 1400 (350x4) is the only way to run stable at my current OC. It's true, faster HTT helps with the memory timings.
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post #4 of 4
Thread Starter 
Interesting....
PWNzershreck
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PWNzershreck
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