AMD Radeon HD 6670 vs ATI Radeon HD 4770
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 and 512MB VRAM Radeon HD 4770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6670 's Advantages
Released 2 years late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (64.00GB/s vs 51.20GB/s)
Lower TDP (66W vs 80W)
ATI Radeon HD 4770 's Advantages
160 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6670
0.768 TFLOPS
Radeon HD 4770
+25%
0.96 TFLOPS
Graphics Card
Apr 2011
Release Date
Apr 2009
Northern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1000 MHz
Memory Clock
800 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
64.00GB/s
Bandwidth
51.20GB/s
Render Config
6
Compute Units
8
-
-
-
480
Shading Units
640
24
TMUs
32
8
ROPs
16
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
6.400 GPixel/s
Pixel Rate
12.00 GPixel/s
19.20 GTexel/s
Texture Rate
24.00 GTexel/s
-
-
-
768.0 GFLOPS
FP32 (float)
960.0 GFLOPS
-
FP64 (double)
192.0 GFLOPS
Board Design
66W
TDP
80W
250 W
Suggested PSU
250 W
1x DVI
1x HDMI 1.3a
1x VGA
Outputs
2x DVI
1x S-Video
None
Power Connectors
1x 6-pin
Graphics Processor
Turks
GPU Name
RV740
Turks XT
(215-0803000)
GPU Variant
RV740 XT
(215-0727019)
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
0.716 billion
Transistors
0.826 billion
118 mm²
Die Size
137 mm²
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
-
-
-
5.0
Shader Model
4.1
