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GPU Comparison
AMD Radeon HD 6870 1600SP Edition vs AMD Radeon R7 450 OEM
AMD Radeon HD 6870 1600SP Edition vs AMD Radeon R7 450 OEM
VS
AMD Radeon HD 6870 1600SP Edition
AMD Radeon R7 450 OEM
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 2GB VRAM Radeon R7 450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870 1600SP Edition 's Advantages
Larger VRAM bandwidth (134.4GB/s vs 72.00GB/s)
1088 additional rendering cores
AMD Radeon R7 450 OEM 's Advantages
Released 3 years and 5 months late
More VRAM (2GB vs 1GB)
Lower TDP (65W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 6870 1600SP Edition
+187%
2.72 TFLOPS
Radeon R7 450 OEM
0.947 TFLOPS
Radeon HD 6870 1600SP Edition
VS
Radeon R7 450 OEM
Graphics Card
Jan 2013
Release Date
Jun 2016
Northern Islands
Generation
Arctic Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
1125 MHz
Memory
1024MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
134.4GB/s
Bandwidth
72.00GB/s
Render Config
-
SM Count
-
20
Compute Units
8
1600
Shading Units
512
80
TMUs
32
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
27.20 GPixel/s
Pixel Rate
14.80 GPixel/s
68.00 GTexel/s
Texture Rate
29.60 GTexel/s
-
FP16 (half)
-
2.720 TFLOPS
FP32 (float)
947.2 GFLOPS
544.0 GFLOPS
FP64 (double)
59.20 GFLOPS
Graphics Processor
Cypress
GPU Name
Cape Verde
Cypress XT (215-0735033)
GPU Variant
Cape Verde PRO2
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
2.154 billion
Transistors
1.5 billion
334 mm²
Die Size
123 mm²
Board Design
175W
TDP
65W
450 W
Suggested PSU
250 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 6-pin
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
2.1 (1.2)
N/A
Vulkan
1.2.170
-
CUDA
-
5.0
Shader Model
6.5 (5.1)
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7
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8
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9
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10
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