Overclock.net - An Overclocking Community - View Single Post - [AMD] Official AMD PCIe statement and new driver 16.7.1 coming in 24 hours

View Single Post
post #14 of (permalink) Old 07-06-2016, 01:36 AM
Shatun-Bear
New to Overclock.net
 
Shatun-Bear's Avatar
 
Join Date: May 2015
Location: Skarasan Deep
Posts: 930
Rep: 94 (Unique: 48)
Quote:
Originally Posted by MuscleBound View Post

Less power draw= less performance.

Quote:
Originally Posted by ChevChelios View Post

so the fix lowers performance ? =/
its 3%, check the actual facebook page

No. Please stop.

Two options:
Quote:
The default solution: shift some of the power load off of the PCIe Graphics (PEG) slot connector, presumably in order to bring power consumption within PCIe spec. Note that AMD doesn't say anything about reducing the total power consumption, and given option #2, it's reasonable to assume that this involves holding the power requirements as-is and shifting the load to the external 6-pin power connector. Based on earlier data this would potentially put the 6-in connector further over spec, but the vast majority of PSUs are very tolerant of this going out of spec.

The optional solution: a toggle that reduces the total power consumption of the card, presumably ensuring both the PEG slot and 6-pin power connector stay below their respective limits. Since the RX 480 is already throttling at times due to power limits, this would further hurt performance, but it's also the most standards-compliant solution (and aptly named "compatibility" mode). AMD notes that this option will have "minimal performance impact", and while we'll have to see the results in the benchmarks, it's worth noting that power consumption is exponential - roughly to the 3rd power of frequency - so a small reduction in frequency can significantly reduce power consumption, as we've seen in the case of the Radeon R9 Nano.

http://www.anandtech.com/show/10469/amds-tuesday-radeon-rx-480-update-new-driver-by-late-thursday


* Ryzen 7 2700X * Gigabyte Aorus X370 Gaming 5 *16GB Crucial Ballistix Elite DDR4 3200Mhz memory * 500GB Samsung 960 EVO NVMe M.2/500GB Crucial BX300
EVGA FTW2 1070 Ti * NZXT S340 Elite White
Shatun-Bear is offline