Re: Claymore's ZCash AMD GPU Miner v11.0 (Windows/Linux)

guys can you tell me about hashrate of r9 380?

you can get max 175 Sol/s on v11

that sounds way too low. perhaps 275?

No its not. Its a 380 not a 390.
380 = R9 285
Its similar to the R9 280 and 7950 but The 285 and 380 are GCN1.2 vs GCN1.0 and it has a 256 Bit memory bus vs 384 Bit. Shader wise it has the same 1792 shaders but a newer architecture. Fiji (Fury Cards) use the same 1.2 architecture.

R7 260 Bonaire and R9 290/390 Hawaii use GCN 1.1.

Memory speed and timings seem to impact performance quite a bit. I had a 7970 with Hynix MFR memory. it did +- 200 with timing mod it went up to 235 sol/s stock memory clocks core 1100. Memory OC on stock timings got it up to 210.

im getting ~260 on a msi 7950 that takes oc to the max thats why i'm so surprised

There are 2 reasons:
1: More memory bandwith and maybe lower latency (timing mod for the 7970 helps if you have Elpida en MFR memory AFR has quite good default timings). Also see RX480 cards that clock high compared to Tahiti and only get 250-270 ish. (there are people that report a bit higher sol/s with timing mod but then you cannot use the latest drivers)
2: ASM support only added for Tahiti and Fiji so far. That boosts performance quite a bit.

The next version of Claymore's miner might have a ASM option for Tonga based cards. Hopefully he can also add it for Polaris.
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