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GPU Comparison
ATI Radeon HD 4870 vs AMD Radeon HD 6670
ATI Radeon HD 4870 vs AMD Radeon HD 6670
VS
ATI Radeon HD 4870
AMD Radeon HD 6670
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 1024MB VRAM Radeon HD 6670 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4870 's Advantages
Larger VRAM bandwidth (115.2GB/s vs 64.00GB/s)
320 additional rendering cores
AMD Radeon HD 6670 's Advantages
Released 2 years and 10 months late
More VRAM (1024GB vs 512GB)
Lower TDP (66W vs 150W)
Score
Benchmark
FP32 (float)
Radeon HD 4870
+56%
1.2 TFLOPS
Radeon HD 6670
0.768 TFLOPS
Radeon HD 4870
VS
Radeon HD 6670
Graphics Card
Jun 2008
Release Date
Apr 2011
Radeon R700
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
1000 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
115.2GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
10
Compute Units
6
800
Shading Units
480
40
TMUs
24
16
ROPs
8
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
256 KB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
6.400 GPixel/s
30.00 GTexel/s
Texture Rate
19.20 GTexel/s
-
FP16 (half)
-
1200 GFLOPS
FP32 (float)
768.0 GFLOPS
240.0 GFLOPS
FP64 (double)
-
Graphics Processor
RV770
GPU Name
Turks
RV770 XT (215-0669049)
GPU Variant
Turks XT (215-0803000)
TeraScale
Architecture
TeraScale 2
TSMC
Foundry
TSMC
55 nm
Process Size
40 nm
0.956 billion
Transistors
0.716 billion
256 mm²
Die Size
118 mm²
Board Design
150W
TDP
66W
450 W
Suggested PSU
250 W
2x DVI 1x S-Video
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
2x 6-pin
Power Connectors
None
Graphics Features
10.1 (10_1)
DirectX
11.2 (11_0)
3.3
OpenGL
4.4
1.1
OpenCL
1.2
N/A
Vulkan
N/A
-
CUDA
-
4.1
Shader Model
5.0
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