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
P104-100
CORE STATE
GP104
VRAM
4 GB
CLOCK SPEED
1733 MHz
TDP
—
BUS WIDTH
256 bit
ARCHITECTURE
Pascal
PROCESS
16 nm
LAUNCH DATE
2017
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
3dmark_3dmark_steel_nomad_dx12
DETAILED SPECIFICATIONS
SPECIFICATION
GTX 660
P104-100
Core Specs
Shading Units
960
1,920
+100.0%
Shaders
960
1,920
+100.0%
TMUs
80
120
+50.0%
ROPs
24
64
+166.7%
SM Count
—
15
Clocks
Base Clock
980 MHz
1607 MHz
Boost Clock
1032 MHz
1733 MHz
Memory Clock
1502 MHz
6 Gbps effective
1251 MHz
10 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
GDDR5X
Memory Bus
192 bit
256 bit
Bandwidth
144.2 GB/s
320.3 GB/s
Cache
L1 Cache
16 KB (per SMX)
48 KB (per SM)
L2 Cache
384 KB
2 MB
Performance
Pixel Rate
20.64 GPixel/s
110.9 GPixel/s
Texture Rate
82.56 GTexel/s
208.0 GTexel/s
FP32 (TFLOPS)
1.981 TFLOPS
6.655 TFLOPS
FP64 (TFLOPS)
82.56 GFLOPS (1:24)
208.0 GFLOPS (1:32)
FP16 (TFLOPS)
—
104.0 GFLOPS (1:64)
Power
TDP
140 W
—
TDP (W)
140
—
Suggested PSU
300 W
200 W
Power Connectors
1x 6-pin
1x 8-pin
Architecture
Architecture
Kepler
Pascal
GPU Name
GK106
GP104
Generation
GeForce 600
Mining GPUs
Process Size
28 nm
16 nm
Transistors
2,540 million
7,200 million
Die Size
221 mm²
314 mm²
Foundry
TSMC
TSMC
Density
11.5M / mm²
22.9M / 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
6.1
Shader Model
6.5 (5.1)
6.8
Physical
Slot Width
Dual-slot
Dual-slot
Length
241 mm
9.5 inches
267 mm
10.5 inches
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Bus Interface
PCIe 3.0 x16
PCIe 1.0 x4
Other
Launch Price
229 USD
—
Production
End-of-life
End-of-life
Predecessor
GeForce 500
—
Successor
GeForce 700
—