NVIDIA GeForce GTX 660 Ti vs ATI Radeon HD 5850
GPU Specs Compare
Graphics Card
Release Date
Aug 2012
Sep 2009
Generation
GeForce 600
Evergreen
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
915 MHz
-
Boost Clock
980 MHz
-
Memory Clock
1502 MHz
1000 MHz
Memory
Memory Size
2GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
144.2GB/s
128.0GB/s
Render Config
Shading Units
1344
1440
TMUs
112
72
ROPs
24
32
L1 Cache
16 KB (per SMX)
8 KB (per CU)
L2 Cache
384 KB
512 KB
Compute Units
-
18
Theoretical Performance
Pixel Rate
27.44 GPixel/s
23.20 GPixel/s
Texture Rate
109.8 GTexel/s
52.20 GTexel/s
FP32 (float)
2.634 TFLOPS
2.088 TFLOPS
FP64 (double)
109.8 GFLOPS
417.6 GFLOPS
Graphics Processor
GPU Name
GK104
Cypress
GPU Variant
GK104-300-KD-A2
Cypress PRO(215-0735043)
Architecture
Kepler
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
3.54 billion
2.154 billion
Die Size
294 mm²
334 mm²
Board Design
TDP
150W
151W
Suggested PSU
450 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
2x 6-pin
2x 6-pin
Graphics Features
DirectX
12 (11_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.1
N/A
CUDA
3.0
-
Shader Model
5.1
5.0