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

**URL:** <https://forum.zcashcommunity.com/t/sapphire-rx-480-oc-vs-470-oc-4gb-vs-8gb/9113>\
**Category:** Mining\
**Created:** [November 25, 2016, 9:11am UTC](https://forum.zcashcommunity.com/t/sapphire-rx-480-oc-vs-470-oc-4gb-vs-8gb/9113 "2016-11-25T09:11:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Rafikichi](https://avatars.discourse-cdn.com/v4/letter/r/919ad9/32.png) [@Rafikichi](https://forum.zcashcommunity.com/u/Rafikichi)\
**Post date:** [November 25, 2016, 9:11am UTC](https://forum.zcashcommunity.com/t/sapphire-rx-480-oc-vs-470-oc-4gb-vs-8gb/9113/1 "2016-11-25T09:11:01Z")

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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?

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**Author:** ![AnorakSupra](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/anoraksupra/32/1809_2.png) [@AnorakSupra](https://forum.zcashcommunity.com/u/AnorakSupra)\
**Post date:** [November 25, 2016, 10:16am UTC](https://forum.zcashcommunity.com/t/sapphire-rx-480-oc-vs-470-oc-4gb-vs-8gb/9113/2 "2016-11-25T10:16:09Z")

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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. 🙂_