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GPU Comparison
AMD Radeon HD 6390 vs ATI Radeon HD 4850
AMD Radeon HD 6390 vs ATI Radeon HD 4850
VS
AMD Radeon HD 6390
ATI Radeon HD 4850
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6390 and 512MB VRAM Radeon HD 4850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6390 's Advantages
Released 3 years and 1 months late
More VRAM (1024GB vs 512GB)
Lower TDP (39W vs 110W)
ATI Radeon HD 4850 's Advantages
Larger VRAM bandwidth (63.55GB/s vs 16.00GB/s)
480 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6390
0.352 TFLOPS
Radeon HD 4850
+184%
1 TFLOPS
Radeon HD 6390
VS
Radeon HD 4850
Graphics Card
Jul 2011
Release Date
Jun 2008
Northern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
500 MHz
Memory Clock
993 MHz
Memory
1024MB
Memory Size
512MB
DDR2
Memory Type
GDDR3
128bit
Memory Bus
256bit
16.00GB/s
Bandwidth
63.55GB/s
Render Config
4
Compute Units
10
-
-
-
320
Shading Units
800
16
TMUs
40
8
ROPs
16
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
4.400 GPixel/s
Pixel Rate
10.00 GPixel/s
8.800 GTexel/s
Texture Rate
25.00 GTexel/s
-
-
-
352.0 GFLOPS
FP32 (float)
1000 GFLOPS
-
FP64 (double)
200.0 GFLOPS
Board Design
39W
TDP
110W
200 W
Suggested PSU
300 W
1x DVI 1x HDMI 1.3a 1x VGA
Outputs
2x DVI 1x S-Video
None
Power Connectors
1x 6-pin
Graphics Processor
Redwood
GPU Name
RV770
Redwood LE
GPU Variant
RV770 PRO (215-0669065)
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
0.627 billion
Transistors
0.956 billion
104 mm²
Die Size
256 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
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