Flashing a R9 270X to an R9 270 / Display Driver Issues

lchase2

Prominent
Jul 10, 2017
13
0
510
Hey all,

I'm trying to fix an R9 270X I got for $24 that doesn't seem to be able to keep up with the factory overclock anymore. It's an XFX R9 270X (two 6 pin double fan) and I'm unfortunately getting the black screen display driver install problem that seems to be an issue with these cards. After I install the drivers via catalyst (or windows driver update) I get a black screen, and I can only get into windows via safe mode using the generic driver. Once in safe mode I can see the display adapter is listed as an XFX R9 200 series, and the proper vram amount is listed, however, I can't get the card identified in afterburner or precision to underclock/volt the card.

I wan't to flash the card down to a stock R9 270, but I've never messed with AMD cards and I certainly have never down flashed a gpu. Any suggestions on how to do this and/or fix the famous driver install bug so that I can underclock manually in afterburner? I know that some regular R9 270s only use one 6 pin whereas this 270x uses two, would that cause any problems with a bios flash?

thanks
 

lchase2

Prominent
Jul 10, 2017
13
0
510
Additional Info via ATIflash and AIDA64

Current VBIOS P/N 113-270XCDF-22-W8 C63101 CURACAO XT GDDR5 64MX32 2GB 150e/150m

AMD Radeon R9 270X (Curacao) Video Adapter

Field Value
Device Properties
Device Description XFX Radeon R9 270X Video Adapter
Bus / Device / Function 1 / 0 / 0
Device ID 1002-6810
Subsystem ID 1682-9275
Revision 00

Graphics Processor Properties:
Video Adapter XFX Radeon R9 270X
BIOS Version 015.041.000.000.000000
BIOS Date 1/15/2014
GPU Code Name Curacao XT
Part Number 113-270XCDF-22-W8
PCI Device 1002-6810 / 1682-9275 (Rev 00)
Transistors 2800 million
Process Technology 28 nm
Die Size 212 mm2
ASIC Quality 69.1%
Bus Type PCI Express 3.0 x16 @ 2.0 x4
Memory Size 2 GB
GPU Clock 150 MHz (original: 1050 MHz)
RAMDAC Clock 400 MHz
Pixel Pipelines 32
Texture Mapping Units 80
Unified Shaders 1280 (v5.1)
DirectX Hardware Support DirectX v11.2
WDDM Version WDDM 1.3

Memory Bus Properties:
Bus Type GDDR5 (Elpida)
Bus Width 256-bit
Real Clock 150 MHz (QDR) (original: 1400 MHz)
Effective Clock 600 MHz