AMD Radeon HD 7990 vs AMD Radeon HD 7970 GHz Edition
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 3GB VRAM Radeon HD 7970 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7990 's Advantages
Released 10 months late
AMD Radeon HD 7970 GHz Edition 's Advantages
Boost Clock has increased by 5% (1050MHz vs 1000MHz)
Lower TDP (300W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 7990
4.096 TFLOPS
Radeon HD 7970 GHz Edition
+5%
4.301 TFLOPS
Graphics Card
Apr 2013
Release Date
Jun 2012
Southern Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
950 MHz
Base Clock
1000 MHz
1000 MHz
Boost Clock
1050 MHz
1500 MHz
Memory Clock
1500 MHz
Memory
3GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
384bit
288.0GB/s
Bandwidth
288.0GB/s
Render Config
32
Compute Units
32
-
-
-
2048
Shading Units
2048
128
TMUs
128
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
768 KB
-
-
-
Theoretical Performance
32.00 GPixel/s
Pixel Rate
33.60 GPixel/s
128.0 GTexel/s
Texture Rate
134.4 GTexel/s
-
-
-
4.096 TFLOPS
FP32 (float)
4.301 TFLOPS
1024 GFLOPS
FP64 (double)
1075 GFLOPS
Board Design
375W
TDP
300W
750 W
Suggested PSU
700 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
2x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
Malta
GPU Name
Tahiti
Malta XT
(215-0849026)
GPU Variant
Tahiti XT2
(215-0821065)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
4.313 billion
365 mm²
Die Size
352 mm²
Graphics Features
12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.2
OpenCL
1.2
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
5.1
