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GPU Comparison
ATI Radeon HD 4770 vs AMD Radeon HD 7950
ATI Radeon HD 4770 vs AMD Radeon HD 7950
VS
ATI Radeon HD 4770
AMD Radeon HD 7950
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4770 's Advantages
Lower TDP (80W vs 200W)
AMD Radeon HD 7950 's Advantages
Released 2 years and 9 months late
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (240.0GB/s vs 51.20GB/s)
1152 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 4770
0.96 TFLOPS
Radeon HD 7950
+198%
2.867 TFLOPS
Radeon HD 4770
VS
Radeon HD 7950
Graphics Card
Apr 2009
Release Date
Jan 2012
Radeon R700
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
800 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
384bit
51.20GB/s
Bandwidth
240.0GB/s
Render Config
8
Compute Units
28
-
-
-
640
Shading Units
1792
32
TMUs
112
16
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
768 KB
-
-
-
Theoretical Performance
12.00 GPixel/s
Pixel Rate
25.60 GPixel/s
24.00 GTexel/s
Texture Rate
89.60 GTexel/s
-
-
-
960.0 GFLOPS
FP32 (float)
2.867 TFLOPS
192.0 GFLOPS
FP64 (double)
716.8 GFLOPS
Board Design
80W
TDP
200W
250 W
Suggested PSU
550 W
2x DVI 1x S-Video
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 6-pin
Graphics Processor
RV740
GPU Name
Tahiti
RV740 XT (215-0727019)
GPU Variant
Tahiti PRO (215-0821056)
TeraScale
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.826 billion
Transistors
4.313 billion
137 mm²
Die Size
352 mm²
Graphics Features
10.1 (10_1)
DirectX
12 (11_1)
3.3
OpenGL
4.6
1.1
OpenCL
1.2
N/A
Vulkan
1.2
-
-
-
4.1
Shader Model
5.1
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