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GPU Comparison
AMD Radeon HD 7970 vs ATI Radeon HD 4870
AMD Radeon HD 7970 vs ATI Radeon HD 4870
VS
AMD Radeon HD 7970
ATI Radeon HD 4870
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 512MB VRAM Radeon HD 4870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7970 's Advantages
Released 3 years and 6 months late
Larger VRAM bandwidth (264.0GB/s vs 115.2GB/s)
1248 additional rendering cores
ATI Radeon HD 4870 's Advantages
Lower TDP (150W vs 250W)
Score
Benchmark
FP32 (float)
Radeon HD 7970
+215%
3.789 TFLOPS
Radeon HD 4870
1.2 TFLOPS
Radeon HD 7970
VS
Radeon HD 4870
Graphics Card
Dec 2011
Release Date
Jun 2008
Southern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1375 MHz
Memory Clock
900 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
264.0GB/s
Bandwidth
115.2GB/s
Render Config
-
SM Count
-
32
Compute Units
10
2048
Shading Units
800
128
TMUs
40
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
Theoretical Performance
29.60 GPixel/s
Pixel Rate
12.00 GPixel/s
118.4 GTexel/s
Texture Rate
30.00 GTexel/s
-
FP16 (half)
-
3.789 TFLOPS
FP32 (float)
1200 GFLOPS
947.2 GFLOPS
FP64 (double)
240.0 GFLOPS
Graphics Processor
Tahiti
GPU Name
RV770
Tahiti XT (215-0821060)
GPU Variant
RV770 XT (215-0669049)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.956 billion
352 mm²
Die Size
256 mm²
Board Design
250W
TDP
150W
600 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
1x 6-pin + 1x 8-pin
Power Connectors
2x 6-pin
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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