AMD Radeon HD 7970 X2 vs AMD Radeon HD 8990 OEM

Table of Contents

Graphics Processor

GPU model New Zealand Malta
Architecture GCN 1.0 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 4,313 million 4,313 million
Die size 352 mm² 365 mm²
GPU variant Malta XT (215-0849026)

Graphics Card

Release date Aug 31st, 2012 Apr 24th, 2013
Generation Southern Islands Sea Islands
Production End-of-life End-of-life
Launch price 899 USD
Interface PCIe 3.0 x16 PCIe 3.0 x16
Reviews 37 in our database
Predecessor Northern Islands Southern Islands
Successor Sea Islands Volcanic Islands

Clocks

GPU clock 925 MHz
Memory clock 1375 MHz 5.5 Gbps effective 1500 MHz 6 Gbps effective
Base clock 950 MHz
Boost clock 1000 MHz

Memory Configuration

Memory size 3 GB 3 GB
Memory type GDDR5 GDDR5
Memory bus width 384 bit 384 bit
Bandwidth 264.0 GB/s 288.0 GB/s

Render Configuration

Shading units 2048 2048
TMUs 128 128
ROPs 32 32
Compute units 32 32
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 768 KB 768 KB

Performance

Pixel rate 29.60 GPixel/s 32.00 GPixel/s
Texture rate 118.4 GTexel/s 128.0 GTexel/s
FP32 (float) performance 3.789 TFLOPS 4.096 TFLOPS
FP64 (double) performance 947.2 GFLOPS (1:4) 1,024 GFLOPS (1:4)

Dimensions & Outputs

Slot width Triple-slot Dual-slot
Length 308 mm 12.1 inches 307 mm 12.1 inches
Width 137 mm 5.4 inches
Height 62 mm 2.4 inches
TDP 500 W 375 W
Suggested PSU 900 W 750 W
Outputs 2x DVI1x HDMI2x mini-DisplayPort 1x DVI4x mini-DisplayPort
Power connectors 3x 8-pin 2x 8-pin
Board number C386

API Support & Features

DirectX 12 (11_1) 12 (11_1)
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.2 1.2
Shader model 5.1 5.1

Other Features

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