Radeon VII (2nd gen consumer Vega GPU)

[Prime95]

Originally Posted by M344587487

My setup was a 20cm case fan

My solution was a cheap GPU mining rig:


Temps dropped 10C-15C. The downside is you must keep pets and young children away. It wouldn't be terribly hard to construct a screen around the unit.

[philbo0042]

My Radeon VII is using about 1GB of the 16GB on the card. Is that normal?

[mrh]

Originally Posted by Prime95

My solution was a cheap GPU mining rig:


Temps dropped 10C-15C. The downside is you must keep pets and young children away. It wouldn't be terribly hard to construct a screen around the unit.

How many cards are you running?

[dcheuk]

Thanksgiving sales on Newegg:

Link (this links to Newegg)

Actually never heard of XFX, how long does it take for Radeon VII to finish a LL/PRP test say on a 90M exponent?

Very tempting to sell my dual 2080s for dual RX 580s. PSU still have lots of juice left .

[M344587487]

XFX only make AMD cards not nvidia, they've been around for a while. Years ago they used to be the go-to for quality, their recent efforts have not been good. This doesn't matter for the Radeon VII as XFX and any other brand that sells Radeon VII is just putting a sticker on the reference design. A 90M exponent can be done in about a day: https://www.mersenneforum.org/showpo...5&postcount=76


Selling dual 2080's for dual 580's would be a bold move, you might prefer dual Radeon VII's instead ;)

[kracker]

Originally Posted by dcheuk

Very tempting to sell my dual 2080s for dual RX 580s. PSU still have lots of juice left .

Don't... RX 580 is a huge downgrade(evident from price)
RVII's have much better LL perf but the 2080 should blow up any amd card in trial factoring.

[dcheuk]

Originally Posted by dcheuk

Thanksgiving sales on Newegg:

Link (this links to Newegg)

Actually never heard of XFX, how long does it take for Radeon VII to finish a LL/PRP test say on a 90M exponent?

Very tempting to sell my dual 2080s for dual RX 580s. PSU still have lots of juice left .

Originally Posted by kracker

Don't... RX 580 is a huge downgrade(evident from price)
RVII's have much better LL perf but the 2080 should blow up any amd card in trial factoring.

Sorry I meant selling dual 2080s for dual Radeon VII. I don't know what I was thinking. This is why submitted articles get rejected by journals lol.

[dcheuk]

Originally Posted by M344587487

XFX only make AMD cards not nvidia, they've been around for a while. Years ago they used to be the go-to for quality, their recent efforts have not been good. This doesn't matter for the Radeon VII as XFX and any other brand that sells Radeon VII is just putting a sticker on the reference design. A 90M exponent can be done in about a day: https://www.mersenneforum.org/showpo...5&postcount=76


Selling dual 2080's for dual 580's would be a bold move, you might prefer dual Radeon VII's instead ;)

Indeed, too bold. I think I can be close to break even after selling the 2080s (can probably get like 400 each after fees and shipping). The two radeon vii cost about usd 1050.

I can totally forseen myself in euphoria after installing two radeon vii in place of 2080s. Sure, I am not going to get 1000fps playing aoe2 or borderlands 3 on ultra or something, but hey I get to finish 2 LL every 1.5 days which equates to about 480 LL a year.

[paulunderwood]

Originally Posted by dcheuk

Indeed, too bold. I think I can be close to break even after selling the 2080s (can probably get like 400 each after fees and shipping). The two radeon vii cost about usd 1050.

I can totally forseen myself in euphoria after installing two radeon vii in place of 2080s. Sure, I am not going to get 1000fps playing aoe2 or borderlands 3 on ultra or something, but hey I get to finish 2 LL every 1.5 days which equates to about 480 LL a year.

I get a M94xxxxxx done in 26 hours on my RVII (setsclk 4, 190w) and one get more throughput by running two instances per card. With two cards you should eaily break the 500 PRP barrier.

[Prime95]

A bit bummed. Today I plugged my Windows box into Kill-A-Watt.

Best I can tell Kill-A-Watt shows gpuowl drawing an extra 240 watts over an idling Radeon VII. Wattman shows the card drawing only 190 watts.

The box has a Platinum power supply.

Anyone else observing such a discrepancy between Wattman readings and at-the-wall power draw?

[mrh]

Originally Posted by Prime95

A bit bummed. Today I plugged my Windows box into Kill-A-Watt.

Best I can tell Kill-A-Watt shows gpuowl drawing an extra 240 watts over an idling Radeon VII. Wattman shows the card drawing only 190 watts.

The box has a Platinum power supply.

Anyone else observing such a discrepancy between Wattman readings and at-the-wall power draw?

I think that's about the same as what I see. I'm running with --setsclk 3, which shows about 125W. My electric meter shows about 155W difference with gpuowl running vs. not running.
About 80% efficient. This is with a EVGA Supernova 750 P2, 80+ Platinum power supply, also running a 1070ti doing TF at 110W, and an i5-9400F running mprime.