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GPU Comparison
AMD Radeon HD 6870 vs AMD Radeon R9 280
AMD Radeon HD 6870 vs AMD Radeon R9 280
VS
AMD Radeon HD 6870
AMD Radeon R9 280
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 3GB VRAM Radeon R9 280 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870 's Advantages
Lower TDP (151W vs 200W)
AMD Radeon R9 280 's Advantages
Released 3 years and 5 months late
Boost Clock933MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (240.0GB/s vs 134.4GB/s)
672 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6870
2.016 TFLOPS
Radeon R9 280
+65%
3.344 TFLOPS
Radeon HD 6870
VS
Radeon R9 280
Graphics Card
Oct 2010
Release Date
Mar 2014
Northern Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
827 MHz
-
Boost Clock
933 MHz
1050 MHz
Memory Clock
1250 MHz
Memory
1024MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
134.4GB/s
Bandwidth
240.0GB/s
Render Config
-
SM Count
-
14
Compute Units
28
1120
Shading Units
1792
56
TMUs
112
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
768 KB
Theoretical Performance
28.80 GPixel/s
Pixel Rate
29.86 GPixel/s
50.40 GTexel/s
Texture Rate
104.5 GTexel/s
-
FP16 (half)
-
2.016 TFLOPS
FP32 (float)
3.344 TFLOPS
-
FP64 (double)
836.0 GFLOPS
Graphics Processor
Barts
GPU Name
Tahiti
Barts XT (215-0798000)
GPU Variant
Tahiti PRO3 (215-0821330)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
1.7 billion
Transistors
4.313 billion
255 mm²
Die Size
352 mm²
Board Design
151W
TDP
200W
450 W
Suggested PSU
550 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
1x DVI 2x HDMI 1.4a 1x DisplayPort 1.2
2x 6-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
5.0
Shader Model
5.1
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