ATI Radeon X800 GTO AGP vs NVIDIA GeForce GT 640
We compared two Desktop platform GPUs: 256MB VRAM Radeon X800 GTO AGP and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon X800 GTO AGP 's Advantages
Larger VRAM bandwidth (31.36GB/s vs 28.51GB/s)
Lower TDP (49W vs 65W)
NVIDIA GeForce GT 640 's Advantages
Released 4 years and 7 months late
More VRAM (2GB vs 256GB)
384 additional rendering cores
Score
Graphics Card
Nov 2007
Release Date
Jun 2012
Radeon R400 AGP
Generation
GeForce 600
Desktop
Type
Desktop
AGP 8x
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
490 MHz
Memory Clock
891 MHz
Memory
256MB
Memory Size
2GB
GDDR3
Memory Type
DDR3
256bit
Memory Bus
128bit
31.36GB/s
Bandwidth
28.51GB/s
Render Config
-
-
-
-
-
-
-
Shading Units
384
12
TMUs
32
12
ROPs
16
-
-
-
-
-
-
-
L1 Cache
16 KB (per SMX)
-
L2 Cache
256 KB
-
-
-
Theoretical Performance
4.800 GPixel/s
Pixel Rate
7.216 GPixel/s
4.800 GTexel/s
Texture Rate
28.86 GTexel/s
-
-
-
-
FP32 (float)
692.7 GFLOPS
-
FP64 (double)
28.86 GFLOPS
Board Design
49W
TDP
65W
200 W
Suggested PSU
250 W
1x DVI
1x VGA
1x S-Video
Outputs
1x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x Molex
Power Connectors
None
Graphics Processor
R420
GPU Name
GK107
R420 GTO
GPU Variant
GK107-300-A2
R400
Architecture
Kepler
TSMC
Foundry
TSMC
130 nm
Process Size
28 nm
0.16 billion
Transistors
1.27 billion
281 mm²
Die Size
118 mm²
Graphics Features
9.0b (9_2)
DirectX
12 (11_0)
2.1
OpenGL
4.6
N/A
OpenCL
3.0
N/A
Vulkan
1.1
-
CUDA
3.0
-
Shader Model
5.1
