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GPU Comparison
AMD Radeon HD 7990 vs AMD Radeon HD 7950
AMD Radeon HD 7990 vs AMD Radeon HD 7950
VS
AMD Radeon HD 7990
AMD Radeon HD 7950
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7990 's Advantages
Released 1 years and 3 months late
Boost Clock1000MHz
Larger VRAM bandwidth (288.0GB/s vs 240.0GB/s)
256 additional rendering cores
AMD Radeon HD 7950 's Advantages
Lower TDP (200W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 7990
+42%
4.096 TFLOPS
Radeon HD 7950
2.867 TFLOPS
Radeon HD 7990
VS
Radeon HD 7950
Graphics Card
Apr 2013
Release Date
Jan 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
Boost Clock
-
1500 MHz
Memory Clock
1250 MHz
Memory
3GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
384bit
288.0GB/s
Bandwidth
240.0GB/s
Render Config
32
Compute Units
28
-
-
-
2048
Shading Units
1792
128
TMUs
112
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
25.60 GPixel/s
128.0 GTexel/s
Texture Rate
89.60 GTexel/s
-
-
-
4.096 TFLOPS
FP32 (float)
2.867 TFLOPS
1024 GFLOPS
FP64 (double)
716.8 GFLOPS
Board Design
375W
TDP
200W
750 W
Suggested PSU
550 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
2x 6-pin
Graphics Processor
Malta
GPU Name
Tahiti
Malta XT (215-0849026)
GPU Variant
Tahiti PRO (215-0821056)
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
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