Welcome to the MacNN Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > Got a deal on a Radeon RX 580

Got a deal on a Radeon RX 580
Thread Tools
reader50
Administrator
Join Date: Jun 2000
Location: California
Status: Offline
Reply With Quote
Feb 15, 2020, 01:13 AM
 
It seems RX 580 cards had a recent price drop. Or they're being cleared out. Newegg has them for as little as $150 (after a rebate). I seem to remember them running $200+.

These are good upgrades from all cards shipped with the 2009-2013 Mac Pros, and exceed both retail upgrade cards (Radeon 7950 and GTX 680). They should also work in eGPU cases for MB / MBPro with thunderbolt jack, running 10.13.4 or higher. They typically use a single 8-pin power connector.

Beware that the RX580 is offered in 4GB and 8GB VRAM configs. I'd avoid the 4GB cards.

I picked up a triple-fan Asus for $170 ($180 - instant $10 code). It's a 2.5-slot thickness, meaning it covers the next PCIe slot. But I valued the low noise more than the next slot. Oversize heat sink + triple fans = next to no noise. It's also possible my 7970 needs new heat-sink grease - it seemed quieter before. But never as quiet as the RX580.

If you need a true 2-slot width card, most of the 2-fan designs are good. Check the pictures for one looking at the ports plate, to confirm it doesn't overflow the plate on the right.

These cards have PC BIOS, so Mac Pros will not show a boot screen until about 50% through the boot process. No EFI boot selector while holding down the Option key. Keep your old video card handy, in case of a boot issue. This is not a concern for eGPU cases, as the eGPU does not load until late in the boot process anyway.

Full-screen YouTube no longer maxes out my GPU, and the card fans are almost always silent. ie - I'm only hearing my case fans. This is with dual 4K monitors. Pretty screen savers used to max out the fans on my 7970, now the RX580 stays almost silent.
( Last edited by reader50; Feb 15, 2020 at 02:47 PM. Reason: typos)
     
ghporter
Administrator
Join Date: Apr 2001
Location: San Antonio TX USA
Status: Offline
Reply With Quote
Feb 15, 2020, 02:21 PM
 
Sounds great!

I've never gotten into the Pros. Cost was a primary factor at first, then that annoying question came up: "What will I do with all that computing power?" As in the stupid cost/benefit analysis pointed to a lesser machine for me.

But the second market for the Mac Pro is growing, and costs are getting more reasonable... Hmmmmm.

Glenn -----OTR/L, MOT, Tx
     
reader50  (op)
Administrator
Join Date: Jun 2000
Location: California
Status: Offline
Reply With Quote
Feb 15, 2020, 10:04 PM
 
Curiously, my UNiGiNE Valley graphics benchmark is almost identical to those with the 7970. CPU load is minimal, so it must be choking on something. I thought it was the PCIe-2 bus running at PCIe-1 speeds ... a problem that used to affect PC cards in a Mac. But System Profiler suggests the card is running at full link speed.

BareFeats benchmarks show significant gains from more powerful graphics cards than the RX580, so it shouldn't be hitting a bottleneck. Best guess is the card is set to Silent Mode (reduced performance) out of the box. I'd have to check in Windows to verify that.
     
ghporter
Administrator
Join Date: Apr 2001
Location: San Antonio TX USA
Status: Offline
Reply With Quote
Feb 16, 2020, 10:21 PM
 
Can Windows natively see all the Pro’s hardware? Running Windows on my iMac (Boot Camp), I seemed to not be able to quite see all the hardware details, but I assume that was a function of the Apple Windows drivers.

I wonder just how fully compatible the RX580’s OS X drivers really are.

Glenn -----OTR/L, MOT, Tx
     
reader50  (op)
Administrator
Join Date: Jun 2000
Location: California
Status: Offline
Reply With Quote
Feb 16, 2020, 10:30 PM
 
Boot Camp does not support Win10 on a cheesegrater Mac Pro. So I put a spare hard drive in, and did a full Win10 install. Added most of the Boot Camp drivers later - you can download them separately.

I haven't booted Windows since adding the RX580. That drive isn't installed, and my drive bays are full. But in previous tests, it seemed to see everything.
     
ghporter
Administrator
Join Date: Apr 2001
Location: San Antonio TX USA
Status: Offline
Reply With Quote
Feb 17, 2020, 01:19 PM
 
That sounds like it's gonna work then.

Here's how I'd do it:
External boot to Win10, look at (and maybe adjust) the card settings, then (assuming the settings stick ) boot into OS X and enjoy.

Glenn -----OTR/L, MOT, Tx
     
reader50  (op)
Administrator
Join Date: Jun 2000
Location: California
Status: Offline
Reply With Quote
Feb 17, 2020, 02:45 PM
 
When Boot Camp would not help, I tried externals first. Win10 would not boot from USB or FW in my tests. That's why I ended up giving it an internal drive.
( Last edited by reader50; Feb 17, 2020 at 05:43 PM. )
     
ghporter
Administrator
Join Date: Apr 2001
Location: San Antonio TX USA
Status: Offline
Reply With Quote
Feb 17, 2020, 06:45 PM
 
Weird, but I'm glad you got it going.

Glenn -----OTR/L, MOT, Tx
     
Webster Hunter
Banned
Join Date: Feb 2020
Status: Offline
Reply With Quote
Feb 28, 2020, 02:22 PM
 
So we are going to show you its performance and our suggestions and then you can make your decision if it’s worth to buy it. Here, we are going to review Sapphire’s RX 580 8 GB Special Edition variant. Results may differ up to 1 to 2% with other variants of Rx 580.
     
reader50  (op)
Administrator
Join Date: Jun 2000
Location: California
Status: Offline
Reply With Quote
Feb 28, 2020, 03:06 PM
 
I already bought it. The thread title made that obvious. But feel free to buy one yourself. I'm sure they're available in Pakistan.
     
   
Thread Tools
 
Forum Links
Forum Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Top
Privacy Policy
All times are GMT -4. The time now is 03:02 PM.
All contents of these forums © 1995-2017 MacNN. All rights reserved.
Branding + Design: www.gesamtbild.com
vBulletin v.3.8.8 © 2000-2017, Jelsoft Enterprises Ltd.,