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GPU Comparison
AMD Radeon HD 6870 1600SP Edition vs AMD Radeon R9 270X
AMD Radeon HD 6870 1600SP Edition vs AMD Radeon R9 270X
VS
AMD Radeon HD 6870 1600SP Edition
AMD Radeon R9 270X
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 2GB VRAM Radeon R9 270X 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
320 additional rendering cores
Lower TDP (175W vs 180W)
AMD Radeon R9 270X 's Advantages
Released 9 months late
Boost Clock1050MHz
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (179.2GB/s vs 134.4GB/s)
Score
Benchmark
FP32 (float)
Radeon HD 6870 1600SP Edition
+1%
2.72 TFLOPS
Radeon R9 270X
2.688 TFLOPS
Radeon HD 6870 1600SP Edition
VS
Radeon R9 270X
Graphics Card
Jan 2013
Release Date
Oct 2013
Northern Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
1000 MHz
-
Boost Clock
1050 MHz
1050 MHz
Memory Clock
1400 MHz
Memory
1024MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
134.4GB/s
Bandwidth
179.2GB/s
Render Config
-
SM Count
-
20
Compute Units
20
1600
Shading Units
1280
80
TMUs
80
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
Theoretical Performance
27.20 GPixel/s
Pixel Rate
33.60 GPixel/s
68.00 GTexel/s
Texture Rate
84.00 GTexel/s
-
FP16 (half)
-
2.720 TFLOPS
FP32 (float)
2.688 TFLOPS
544.0 GFLOPS
FP64 (double)
168.0 GFLOPS
Graphics Processor
Cypress
GPU Name
Curacao
Cypress XT (215-0735033)
GPU Variant
Curacao XT (215-0848004)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
2.154 billion
Transistors
2.8 billion
334 mm²
Die Size
212 mm²
Board Design
175W
TDP
180W
450 W
Suggested PSU
450 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 6-pin
Power Connectors
2x 6-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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