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GPU Comparison
AMD Radeon R9 280X2 vs ATI Radeon HD 3870
AMD Radeon R9 280X2 vs ATI Radeon HD 3870
VS
AMD Radeon R9 280X2
ATI Radeon HD 3870
We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X2 and 512MB VRAM Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 280X2 's Advantages
Boost Clock1000MHz
Larger VRAM bandwidth (288.0GB/s vs 72.06GB/s)
1728 additional rendering cores
ATI Radeon HD 3870 's Advantages
Lower TDP (106W vs 375W)
Score
Benchmark
FP32 (float)
Radeon R9 280X2
+724%
4.096 TFLOPS
Radeon HD 3870
0.497 TFLOPS
Radeon R9 280X2
VS
Radeon HD 3870
Graphics Card
Unknown
Release Date
Nov 2007
Volcanic Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
950 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1500 MHz
Memory Clock
1126 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR4
384bit
Memory Bus
256bit
288.0GB/s
Bandwidth
72.06GB/s
Render Config
-
SM Count
-
32
Compute Units
4
2048
Shading Units
320
128
TMUs
16
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
256 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
12.43 GPixel/s
128.0 GTexel/s
Texture Rate
12.43 GTexel/s
-
FP16 (half)
-
4.096 TFLOPS
FP32 (float)
497.3 GFLOPS
1024 GFLOPS
FP64 (double)
99.46 GFLOPS
Graphics Processor
Tahiti
GPU Name
RV670
Tahiti XTL (215-0821065)
GPU Variant
RV670 XT (215-0708005)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.666 billion
352 mm²
Die Size
192 mm²
Board Design
375W
TDP
106W
750 W
Suggested PSU
300 W
6x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
3x 8-pin
Power Connectors
1x 6-pin
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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