GeForce GTX 660 vs Radeon X1650
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 256MB VRAM Radeon X1650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 660 Advantages
Released 4 years and 10 months late
Boost Clock1032MHz
More VRAM (2GB vs 256GB)
Larger VRAM bandwidth (144.2GB/s vs 6.400GB/s)
960 additional rendering cores
Score
Graphics Card
Sep 2012
Release Date
Nov 2007
GeForce 600
Generation
Radeon R500 PCIe
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
980 MHz
Base Clock
-
1032 MHz
Boost Clock
-
1502 MHz
Memory Clock
400 MHz
Memory
2GB
Memory Size
256MB
GDDR5
Memory Type
DDR2
192bit
Memory Bus
64bit
144.2GB/s
Bandwidth
6.400GB/s
Render Config
960
Shading Units
-
80
TMUs
4
24
ROPs
4
16 KB (per SMX)
L1 Cache
-
384 KB
L2 Cache
-
Theoretical Performance
20.64 GPixel/s
Pixel Rate
2.540 GPixel/s
82.56 GTexel/s
Texture Rate
2.540 GTexel/s
1.981 TFLOPS
FP32 (float)
-
82.56 GFLOPS
FP64 (double)
-
Board Design
140W
TDP
Unknown
300 W
Suggested PSU
200 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
1x DVI
1x VGA
1x S-Video
1x VGA
1x S-Video
1x 6-pin
Power Connectors
None
Graphics Processor
GK106
GPU Name
RV516
GK106-400-A1
GPU Variant
-
Kepler
Architecture
Ultra-Threaded SE
TSMC
Foundry
UMC
28 nm
Process Size
90 nm
2.54 billion
Transistors
0.105 billion
221 mm²
Die Size
100 mm²
Graphics Features
12 (11_0)
DirectX
9.0c (9_3)
4.6
OpenGL
2.1
3.0
OpenCL
N/A
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
3.0