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GPU Comparison
AMD Radeon HD 6870 vs ATI Radeon HD 4700
AMD Radeon HD 6870 vs ATI Radeon HD 4700
VS
AMD Radeon HD 6870
ATI Radeon HD 4700
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 512MB VRAM Radeon HD 4700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870 's Advantages
Released 8 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (134.4GB/s vs 12.80GB/s)
800 additional rendering cores
ATI Radeon HD 4700 's Advantages
Lower TDP (50W vs 151W)
Score
Benchmark
FP32 (float)
Radeon HD 6870
+425%
2.016 TFLOPS
Radeon HD 4700
0.384 TFLOPS
Radeon HD 6870
VS
Radeon HD 4700
Graphics Card
Oct 2010
Release Date
Feb 2010
Northern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
400 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
128bit
134.4GB/s
Bandwidth
12.80GB/s
Render Config
-
SM Count
-
14
Compute Units
4
1120
Shading Units
320
56
TMUs
32
32
ROPs
8
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
128 KB
Theoretical Performance
28.80 GPixel/s
Pixel Rate
4.800 GPixel/s
50.40 GTexel/s
Texture Rate
19.20 GTexel/s
-
FP16 (half)
-
2.016 TFLOPS
FP32 (float)
384.0 GFLOPS
-
FP64 (double)
-
Graphics Processor
Barts
GPU Name
RV730
Barts XT (215-0798000)
GPU Variant
RV730 CE
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
1.7 billion
Transistors
0.514 billion
255 mm²
Die Size
146 mm²
Board Design
151W
TDP
50W
450 W
Suggested PSU
250 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
-
Graphics Features
11.2 (11_0)
DirectX
10.1 (10_1)
4.4
OpenGL
3.3
1.2
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
-
5.0
Shader Model
4.1
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