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GPU Comparison
AMD Radeon HD 7870 GHz Edition vs ATI Radeon HD 4890
AMD Radeon HD 7870 GHz Edition vs ATI Radeon HD 4890
VS
AMD Radeon HD 7870 GHz Edition
ATI Radeon HD 4890
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 1024MB VRAM Radeon HD 4890 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 GHz Edition 's Advantages
Released 2 years and 11 months late
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (153.6GB/s vs 124.8GB/s)
480 additional rendering cores
Lower TDP (175W vs 190W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 GHz Edition
+88%
2.56 TFLOPS
Radeon HD 4890
1.36 TFLOPS
Radeon HD 7870 GHz Edition
VS
Radeon HD 4890
Graphics Card
Mar 2012
Release Date
Apr 2009
Southern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1200 MHz
Memory Clock
975 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
153.6GB/s
Bandwidth
124.8GB/s
Render Config
-
SM Count
-
20
Compute Units
10
1280
Shading Units
800
80
TMUs
40
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
13.60 GPixel/s
80.00 GTexel/s
Texture Rate
34.00 GTexel/s
-
FP16 (half)
-
2.560 TFLOPS
FP32 (float)
1360 GFLOPS
160.0 GFLOPS
FP64 (double)
272.0 GFLOPS
Graphics Processor
Pitcairn
GPU Name
RV790
Pitcairn XT (215-0828047)
GPU Variant
RV790 XT (215-0758016)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
2.8 billion
Transistors
0.959 billion
212 mm²
Die Size
282 mm²
Board Design
175W
TDP
190W
450 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 6-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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8
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9
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10
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