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GPU Comparison
ATI Radeon HD 2900 XT vs AMD Radeon HD 6770 Green Edition
ATI Radeon HD 2900 XT vs AMD Radeon HD 6770 Green Edition
VS
ATI Radeon HD 2900 XT
AMD Radeon HD 6770 Green Edition
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XT and 2GB VRAM Radeon HD 6770 Green Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 2900 XT 's Advantages
Larger VRAM bandwidth (106.0GB/s vs 21.34GB/s)
AMD Radeon HD 6770 Green Edition 's Advantages
Released 5 years and 11 months late
400 additional rendering cores
Lower TDP (86W vs 215W)
Score
Benchmark
FP32 (float)
Radeon HD 2900 XT
0.476 TFLOPS
Radeon HD 6770 Green Edition
+111%
1.008 TFLOPS
Radeon HD 2900 XT
VS
Radeon HD 6770 Green Edition
Graphics Card
May 2007
Release Date
Apr 2013
Radeon R600
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 1.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
828 MHz
Memory Clock
667 MHz
Memory
512MB
Memory Size
2GB
GDDR3
Memory Type
GDDR3
512bit
Memory Bus
128bit
106.0GB/s
Bandwidth
21.34GB/s
Render Config
-
SM Count
-
4
Compute Units
9
320
Shading Units
720
16
TMUs
36
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
-
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
256 KB
Theoretical Performance
11.89 GPixel/s
Pixel Rate
11.20 GPixel/s
11.89 GTexel/s
Texture Rate
25.20 GTexel/s
-
FP16 (half)
-
475.5 GFLOPS
FP32 (float)
1008 GFLOPS
-
FP64 (double)
-
Graphics Processor
R600
GPU Name
Juniper
R600 XT (215RGMDKA13FG)
GPU Variant
Juniper LE (215-0754009)
TeraScale
Architecture
TeraScale 2
TSMC
Foundry
TSMC
80 nm
Process Size
40 nm
0.72 billion
Transistors
1.04 billion
420 mm²
Die Size
166 mm²
Board Design
215W
TDP
86W
550 W
Suggested PSU
250 W
2x DVI 1x S-Video
Outputs
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
1x 6-pin + 1x 8-pin
Power Connectors
-
Graphics Features
10.0 (10_0)
DirectX
11.2 (11_0)
3.3 (full) 4.0 (partial)
OpenGL
4.4
N/A
OpenCL
1.2
N/A
Vulkan
N/A
-
CUDA
-
4.0
Shader Model
5.0
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