ASUS Strix RX580

[blackmomba]

So I picked up two of these recently for mining

I've got them both in the same rig on a sabertooth 990fx

Without any tweaks or bios mods, I'm seeing the first card get around 24mhs and the second getting only 19mhs.. using claymore 10.0 and I'm unsure why

Got the environment variables set up right, cards are clocked identically, static page file set at 16gb..

The only difference I can see is that MSI afterburner reports less frame buffer usage on the second.. approx 90% vs 70%

Any ideas ?

[halker2010]

low power or bad riser also sharing molex for risers or 8 pin pci e power cable can be cause of lower hash rate based on my experience.

[blackmomba]

low power or bad riser also sharing molex for risers or 8 pin pci e power cable can be cause of lower hash rate based on my experience.

Thanks for the response. This isn't really a dedicated rig so I've got the cards right on the boards, each with their own 8 pin PCI-EX cable coming from PSU

It might be that the board is just too old and isn't delivering the right amount of power as you've mentioned. It's a first revision Sabertooth 990FX https://www.asus.com/Motherboards/SABERTOOTH_990FX/overview/

Afterburner does report lower power consumption, but up until now I related that to the lower amount of work being performed..

I'm going to try to switch the cards to see if I can isolate it to a the second PCI_EX slot.. I know I have more than two but these are double slot cards so I'm limited in which slots I can use...

[fapar]

So I picked up two of these recently for mining

I've got them both in the same rig on a sabertooth 990fx

Without any tweaks or bios mods, I'm seeing the first card get around 24mhs and the second getting only 19mhs.. using claymore 10.0 and I'm unsure why

Got the environment variables set up right, cards are clocked identically, static page file set at 16gb..

The only difference I can see is that MSI afterburner reports less frame buffer usage on the second.. approx 90% vs 70%

Any ideas ?

Most likely a low hashrate on the graphics card that produces the image. And that's why it shows a lower hashrate.
Try to swap cards and check the result.

[blackmomba]

So I picked up two of these recently for mining

I've got them both in the same rig on a sabertooth 990fx

Without any tweaks or bios mods, I'm seeing the first card get around 24mhs and the second getting only 19mhs.. using claymore 10.0 and I'm unsure why

Got the environment variables set up right, cards are clocked identically, static page file set at 16gb..

The only difference I can see is that MSI afterburner reports less frame buffer usage on the second.. approx 90% vs 70%

Any ideas ?

Most likely a low hashrate on the graphics card that produces the image. And that's why it shows a lower hashrate.
Try to swap cards and check the result.

Thanks very much, I'll give that a shot