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GPU Comparison
AMD Radeon 550X 640SP vs AMD Radeon HD 6870
AMD Radeon 550X 640SP vs AMD Radeon HD 6870
VS
AMD Radeon 550X 640SP
AMD Radeon HD 6870
We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 1024MB VRAM Radeon HD 6870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon 550X 640SP 's Advantages
Released 7 years and 6 months late
Boost Clock1071MHz
More VRAM (4GB vs 1GB)
Lower TDP (50W vs 151W)
AMD Radeon HD 6870 's Advantages
Larger VRAM bandwidth (134.4GB/s vs 48.00GB/s)
480 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon 550X 640SP
1.371 TFLOPS
Radeon HD 6870
+47%
2.016 TFLOPS
Radeon 550X 640SP
VS
Radeon HD 6870
Graphics Card
Apr 2018
Release Date
Oct 2010
Polaris
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
1019 MHz
Base Clock
-
1071 MHz
Boost Clock
-
1500 MHz
Memory Clock
1050 MHz
Memory
4GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
256bit
48.00GB/s
Bandwidth
134.4GB/s
Render Config
-
SM Count
-
10
Compute Units
14
640
Shading Units
1120
40
TMUs
56
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
512 KB
Theoretical Performance
17.14 GPixel/s
Pixel Rate
28.80 GPixel/s
42.84 GTexel/s
Texture Rate
50.40 GTexel/s
1371 GFLOPS
FP16 (half)
-
1371 GFLOPS
FP32 (float)
2.016 TFLOPS
85.68 GFLOPS
FP64 (double)
-
Graphics Processor
Lexa
GPU Name
Barts
Lexa PRO (215-0904018)
GPU Variant
Barts XT (215-0798000)
GCN 4.0
Architecture
TeraScale 2
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
40 nm
2.2 billion
Transistors
1.7 billion
103 mm²
Die Size
255 mm²
Board Design
50W
TDP
151W
250 W
Suggested PSU
450 W
1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a
Outputs
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
None
Power Connectors
2x 6-pin
Graphics Features
12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
6.4
Shader Model
5.0
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