AMD RADEON HD5870, how to detect a fake?

[h9826790]

Single monitor DVI.

Unless I'm missing something, it has always seemed to run well (currently High Sierra).

Could the issue you see be monitor dependent ?

AMD Radeon HD 7950:
Chipset Model: AMD Radeon HD 7950
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 3 GB
Vendor: AMD (0x1002)
Device ID: 0x679a
Revision ID: 0x0000
ROM Revision: 113-E2080C-101
VBIOS Version: 113-C3810100-U01
EFI Driver Version: 01.00.624
Metal: Supported, feature set macOS GPUFamily1 v3

No, nothing to do with cable, monitor.

But DVI should be good, even HDMI should be good. But if you use Display port with single screen. Most likely you can see the flickering as well.

It’s a known issue. Not only on my setup. And not only on one card (I contacted Sapphire and get another card via RMA, exactly the same issue. Others users also have same experience).

 

[Plutonius]

No, nothing to do with cable, monitor.

But DVI should be good, even HDMI should be good. But if you use Display port with single screen. Most likely you can see the flickering as well.

It’s a known issue. Not only on my setup. And not only on one card (I contacted Sapphire and get another card via RMA, exactly the same issue. Others users also have same experience).

Thank you. Then if the OP used the HD 7950 HD DVI or HDMI connection, he would have no issues with the 7950 HD ME card he was considering ?

After I get my money back, I'm just gonna buy a Sapphire 7950 ME from a reputable dealer.

 

[h9826790]

Thank you. Then if the OP used the HD 7950 HD DVI or HDMI connection, he would have no issues with the 7950 HD ME card he was considering ?

I believe so