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
T400
CORE STATE
TU117
VRAM
2 GB
CLOCK SPEED
1425 MHz
TDP
30 W
BUS WIDTH
64 bit
ARCHITECTURE
Turing
PROCESS
12 nm
LAUNCH DATE
2021
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
GTX 660
T400
Core Specs
Shading Units
960
384
-60.0%
Shaders
960
384
-60.0%
TMUs
80
24
-70.0%
ROPs
24
16
-33.3%
SM Count
—
6
Clocks
Base Clock
980 MHz
420 MHz
Boost Clock
1032 MHz
1425 MHz
Memory Clock
1502 MHz
6 Gbps effective
1250 MHz
10 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
GDDR6
Memory Bus
192 bit
64 bit
Bandwidth
144.2 GB/s
80.00 GB/s
Cache
L1 Cache
16 KB (per SMX)
64 KB (per SM)
L2 Cache
384 KB
1024 KB
Performance
Pixel Rate
20.64 GPixel/s
22.80 GPixel/s
Texture Rate
82.56 GTexel/s
34.20 GTexel/s
FP32 (TFLOPS)
1.981 TFLOPS
1,094.4 GFLOPS
FP64 (TFLOPS)
82.56 GFLOPS (1:24)
34.20 GFLOPS (1:32)
FP16 (TFLOPS)
—
2.189 TFLOPS (2:1)
Power
TDP
140 W
30 W
TDP (W)
140
30
-78.6%
Suggested PSU
300 W
200 W
Power Connectors
1x 6-pin
None
Architecture
Architecture
Kepler
Turing
GPU Name
GK106
TU117
Generation
GeForce 600
Quadro Turing
(Tx000)
Process Size
28 nm
12 nm
Transistors
2,540 million
4,700 million
Die Size
221 mm²
200 mm²
Foundry
TSMC
TSMC
Density
11.5M / mm²
23.5M / 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
7.5
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
3x mini-DisplayPort 1.4a
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
Quadro Volta
Successor
GeForce 700
Workstation Ampere