ATI Radeon HD 5970 vs NVIDIA GeForce GTX 660 OEM
GPU Specs Compare
Graphics Card
Release Date
Nov 2009
Aug 2012
Generation
Evergreen
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1000 MHz
1400 MHz
Base Clock
-
823 MHz
Boost Clock
-
888 MHz
Memory
Memory Size
1024MB
1536MB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
192bit
Bandwidth
128.0GB/s
134.4GB/s
Render Config
Compute Units
20
-
Shading Units
1600
1152
TMUs
80
96
ROPs
32
24
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
384 KB
Theoretical Performance
Pixel Rate
23.20 GPixel/s
21.31 GPixel/s
Texture Rate
58.00 GTexel/s
85.25 GTexel/s
FP32 (float)
2.320 TFLOPS
2.046 TFLOPS
FP64 (double)
464.0 GFLOPS
85.25 GFLOPS
Graphics Processor
GPU Name
Hemlock
GK104
GPU Variant
Hemlock XT(215-0735075)
GK104-200-KD-A2
Architecture
TeraScale 2
Kepler
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
2.154 billion
3.54 billion
Die Size
334 mm²
294 mm²
Board Design
TDP
294W
130W
Suggested PSU
600 W
300 W
Outputs
2x DVI1x mini-DisplayPort 1.1
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Graphics Features
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.1
Shader Model
5.0
5.1
CUDA
-
3.0
📊 Benchmark
3DMark Time Spy
-
1,194
3DMark Time Spy Extreme
-
260