Sapphire RX 480 OC vs 470 OC 4GB vs 8GB

It's Black Friday. What matters most?

The Sapphire 470/480 OC cards are the best. Why should I buy 8 GB vs. 4 GB when my current 470 OC 8GB is utilizing 2300 MB, according to GPU-Z, and mining at 180 H/s? 4 GB should do the same?

My gut says go cheap and beautiful 4 GB cards to complete my 7 GPU rig. Why not?

The 8GB cards use Samsung memory with different timings and better OC capability.

My Sapphire RX470 Nitro+ 4GB Hynix cards run at 1900MHz with the timings from the 1375strap, and run into a few memory errors.
The Sapphire RX470 Nitro+ 8GB Samsung testcard I got yesterday, runs at 2135 MHz with 1500strap timings, no errors what so ever.

Claymore V8
4GB: 182,8 Sol/s (4 hour average) 1388MHz core clock, 1900MHz memory clock
8GB: 191,3 Sol/s (4 hour average) 1400MHz core clock, 2135MHz memory clock

I know, core clocks differ, but I have not had a lot time to twiddle and twek. :slight_smile:

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