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GPU Comparison
NVIDIA GeForce GTX 660 vs ATI Radeon X800 GTO AGP
NVIDIA GeForce GTX 660 vs ATI Radeon X800 GTO AGP
VS
NVIDIA GeForce GTX 660
ATI Radeon X800 GTO AGP
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 256MB VRAM Radeon X800 GTO AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660 's Advantages
Released 4 years and 10 months late
Boost Clock1032MHz
Larger VRAM bandwidth (144.2GB/s vs 31.36GB/s)
960 additional rendering cores
ATI Radeon X800 GTO AGP 's Advantages
Lower TDP (49W vs 140W)
Score
GeForce GTX 660
VS
Radeon X800 GTO AGP
Graphics Card
Sep 2012
Release Date
Nov 2007
GeForce 600
Generation
Radeon R400 AGP
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
AGP 8x
Clock Speeds
980 MHz
Base Clock
-
1032 MHz
Boost Clock
-
1502 MHz
Memory Clock
490 MHz
Memory
2GB
Memory Size
256MB
GDDR5
Memory Type
GDDR3
192bit
Memory Bus
256bit
144.2GB/s
Bandwidth
31.36GB/s
Render Config
-
SM Count
-
-
Compute Units
-
960
Shading Units
-
80
TMUs
12
24
ROPs
12
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
-
384 KB
L2 Cache
-
Theoretical Performance
20.64 GPixel/s
Pixel Rate
4.800 GPixel/s
82.56 GTexel/s
Texture Rate
4.800 GTexel/s
-
FP16 (half)
-
1.981 TFLOPS
FP32 (float)
-
82.56 GFLOPS
FP64 (double)
-
Graphics Processor
GK106
GPU Name
R420
GK106-400-A1
GPU Variant
R420 GTO
Kepler
Architecture
R400
TSMC
Foundry
TSMC
28 nm
Process Size
130 nm
2.54 billion
Transistors
0.16 billion
221 mm²
Die Size
281 mm²
Board Design
140W
TDP
49W
300 W
Suggested PSU
200 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x VGA 1x S-Video
1x 6-pin
Power Connectors
1x Molex
Graphics Features
12 (11_0)
DirectX
9.0b (9_2)
4.6
OpenGL
2.1
3.0
OpenCL
N/A
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
-
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