GPU Comparison
GEFORCE
NVIDIA GeForce GTX 660
CORE STATE
GK106
VRAM
2 GB
CLOCK SPEED
1032 MHz
TDP
140 W
BUS WIDTH
192 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
VS
GEFORCE
Tesla M4
CORE STATE
GM206
VRAM
4 GB
CLOCK SPEED
1072 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
Maxwell 2.0
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
GTX 660
Tesla M4
Core Specs
Shading Units
960
1,024
+6.7%
Shaders
960
1,024
+6.7%
TMUs
80
64
-20.0%
ROPs
24
32
+33.3%
Clocks
Base Clock
980 MHz
872 MHz
Boost Clock
1032 MHz
1072 MHz
Memory Clock
1502 MHz
6 Gbps effective
1375 MHz
5.5 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
GDDR5
Memory Bus
192 bit
128 bit
Bandwidth
144.2 GB/s
88.00 GB/s
Cache
L1 Cache
16 KB (per SMX)
48 KB (per SMM)
L2 Cache
384 KB
1024 KB
Performance
Pixel Rate
20.64 GPixel/s
34.30 GPixel/s
Texture Rate
82.56 GTexel/s
68.61 GTexel/s
FP32 (TFLOPS)
1.981 TFLOPS
2.195 TFLOPS
FP64 (TFLOPS)
82.56 GFLOPS (1:24)
68.61 GFLOPS (1:32)
Power
TDP
140 W
50 W
TDP (W)
140
50
-64.3%
Suggested PSU
300 W
250 W
Power Connectors
1x 6-pin
—
Architecture
Architecture
Kepler
Maxwell 2.0
GPU Name
GK106
GM206
Generation
GeForce 600
Tesla Maxwell
(Mxx)
Process Size
28 nm
28 nm
Transistors
2,540 million
2,940 million
Die Size
221 mm²
228 mm²
Foundry
TSMC
TSMC
Density
11.5M / mm²
12.9M / mm²
API Support
DirectX
12 (11_0)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.2.175
1.4
OpenCL
3.0
3.0
CUDA
3.0
5.2
Shader Model
6.5 (5.1)
6.8
Physical
Slot Width
Dual-slot
Single-slot
Length
241 mm
9.5 inches
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
229 USD
—
Production
End-of-life
End-of-life
Predecessor
GeForce 500
Tesla Kepler
Successor
GeForce 700
Tesla Pascal