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[Gamers Nexus] Vega FE Hybrid: Fixing PWR Leakage & OC Boost

post #1 of 19
Thread Starter 










Full Review: AMD Vega Hybrid Mod: Fixing Power Leakage for Higher OC
http://www.gamersnexus.net/guides/2986-amd-vega-hybrid-mod-results-overclocking-liquid-vs-air/page-3









Quote:
Conclusion: Vega Limited by Cooling, then Max Power

For anyone who skipped the thermals & power page because it’s less “exciting” than gaming, we’d advise going back and reading that page prior to commenting or reading the conclusion. That’s really the bulk of this coverage, and is far more important than the gaming benchmarks; that said, the gaming benchmarks do provide some insight as to clock scalability of Vega in different applications.

This card still should not be bought for gaming, and the card and its drivers still should get polish from AMD before it’s bought in general, really, but the gaming results are interesting. The clock behavior is the most deserving of attention, just be careful of how far you take those numbers, and remember to wait for RX Vega-specific numbers rather than speculate.

All that cleared away, the power leakage reduction under liquid was non-trivial, and granted us our additional ~40MHz of OC headroom on the core (by way of granting ~30W more to the core). Under max consumption and overclock, we measured current at the PSU cables to be ~33.3A at 12V, or just under 400W (+/-2% error). Given that there’s also power going through the PCIe slot, this is one of the most power-hungry overclocks we’ve managed without modding BIOS to increase the power limit. The gains in thermals were tremendous, ultimately affording the reduction in power leakage (and overall increased power available to the core).
....

Edited by EastCoast - 7/13/17 at 7:55pm
post #2 of 19
Quote:
Originally Posted by TheLAWNOOB View Post

.
No. All that efford removes the power and thermal limit that boost VEGA performance by 25% in DOOM
post #3 of 19
Thread Starter 
I wonder what an oc at 1700 will do with a slight undervolt.
post #4 of 19
They should just wait for RX vega, is they want to tweak voltages and OC....
post #5 of 19
Vega FE AIO has a Nidec AP-31 Fan with a brass fan hub cover for leaks or just to rebrand it as AMD made but won't that make it die wear out faster?

https://www.youtube.com/watch?v=oSZz6xoooAw
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post #6 of 19
Quote:
Originally Posted by artemis2307 View Post

No. All that efford removes the power and thermal limit that boost VEGA performance by 25% in DOOM
Quote:
Originally Posted by GamersNexus 

Doom... I'm just mentioning this because I know it will be posted as a seminal example and stripped out of all context of the rest of the review and people will just share the Doom examples [...] I would caution you to just not speculate what the performance of RX Vega will be based on rumored clock rates or card specifications are for RX Vega.

I know you're not speculating on RX per se, but don't leave the Doom example out there hanging when the rest of the uplifts were uninspiring.

This card pulls an unbelievable amount of power for the output. Hoping RX will have a trick or two up its sleeve.
Edited by infranoia - 7/16/17 at 12:33am
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post #7 of 19
I think the OC numbers here are what everyone was hoping to see in Vega's stock form. It would be great if stock RX Vega can perform similarly to the FE OC level of performance, so that OCing the RX Vega can bring it up to stock 1080Ti performance, if not better. If it can do that for a decent price ($500-600), then I will be more than happy to pick up one, otherwise it will be more of the waiting game for me.
    
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post #8 of 19
but needing an AIO to unleash it's full power is a bit... rediculous, 290X all over again??? biggrin.gif
everybody bashing VEGA about power, forgetting that the good ol' 290X needed a beefy cooler just to not throttle, and prolly WC to max out it's clock biggrin.gif
post #9 of 19
Thread Starter 
I wonder how this card will perform with a a full aftermarket waterblock.
post #10 of 19
Ive been so close to pulling the trigger on a 1080Ti Hydro Copper, but I think I really need to wait for Vega. Either Vega is actually decent and I get to use my Freesync monitor as it should be orrrr possibly Nvidia does a price drop on 1080 and the 1080Ti. Hoping I win either way. But this does look semi promising for me at least.
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