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GPU Comparison
AMD Radeon R9 280X2 vs ATI Radeon HD 4855
AMD Radeon R9 280X2 vs ATI Radeon HD 4855
VS
AMD Radeon R9 280X2
ATI Radeon HD 4855
We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X2 and 512MB VRAM Radeon HD 4855 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 115.2GB/s)
1408 additional rendering cores
ATI Radeon HD 4855 's Advantages
Lower TDP (110W vs 375W)
Score
Benchmark
FP32 (float)
Radeon R9 280X2
+456%
4.096 TFLOPS
Radeon HD 4855
0.736 TFLOPS
Radeon R9 280X2
VS
Radeon HD 4855
Graphics Card
Unknown
Release Date
Jan 2010
Volcanic Islands
Generation
Radeon R700
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
900 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
288.0GB/s
Bandwidth
115.2GB/s
Render Config
-
SM Count
-
32
Compute Units
8
2048
Shading Units
640
128
TMUs
32
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
32.00 GPixel/s
Pixel Rate
9.200 GPixel/s
128.0 GTexel/s
Texture Rate
18.40 GTexel/s
-
FP16 (half)
-
4.096 TFLOPS
FP32 (float)
736.0 GFLOPS
1024 GFLOPS
FP64 (double)
147.2 GFLOPS
Graphics Processor
Tahiti
GPU Name
RV770
Tahiti XTL (215-0821065)
GPU Variant
RV770 PRO (215-0669065)
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
375W
TDP
110W
750 W
Suggested PSU
300 W
6x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
3x 8-pin
Power Connectors
1x 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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