GPU Comparison
GEFORCE
NVIDIA GeForce GTX 660 Ti
CORE STATE
GK104
VRAM
2 GB
CLOCK SPEED
980 MHz
TDP
150 W
BUS WIDTH
192 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
VS
GEFORCE
Tesla P40
CORE STATE
GP102
VRAM
24 GB
CLOCK SPEED
1531 MHz
TDP
250 W
BUS WIDTH
384 bit
ARCHITECTURE
Pascal
PROCESS
16 nm
LAUNCH DATE
2016
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
GTX 660 Ti
Tesla P40
Core Specs
Shading Units
1,344
3,840
+185.7%
Shaders
1,344
3,840
+185.7%
TMUs
112
240
+114.3%
ROPs
24
96
+300.0%
SM Count
—
30
Clocks
Base Clock
915 MHz
1303 MHz
Boost Clock
980 MHz
1531 MHz
Memory Clock
1502 MHz
6 Gbps effective
1808 MHz
7.2 Gbps effective
Memory
Memory Size
2 GB
24 GB
VRAM (MB)
2,048
24,576
+1100.0%
Memory Type
GDDR5
GDDR5
Memory Bus
192 bit
384 bit
Bandwidth
144.2 GB/s
347.1 GB/s
Cache
L1 Cache
16 KB (per SMX)
48 KB (per SM)
L2 Cache
384 KB
3 MB
Performance
Pixel Rate
27.44 GPixel/s
147.0 GPixel/s
Texture Rate
109.8 GTexel/s
367.4 GTexel/s
FP32 (TFLOPS)
2.634 TFLOPS
11.76 TFLOPS
FP64 (TFLOPS)
109.8 GFLOPS (1:24)
367.4 GFLOPS (1:32)
FP16 (TFLOPS)
—
183.7 GFLOPS (1:64)
Power
TDP
150 W
250 W
TDP (W)
150
250
+66.7%
Suggested PSU
450 W
600 W
Power Connectors
2x 6-pin
8-pin EPS
Architecture
Architecture
Kepler
Pascal
GPU Name
GK104
GP102
Generation
GeForce 600
Tesla Pascal
(Pxx)
Process Size
28 nm
16 nm
Transistors
3,540 million
11,800 million
Die Size
294 mm²
471 mm²
Foundry
TSMC
TSMC
Density
12.0M / mm²
25.1M / 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
Height
—
111 mm
4.4 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
299 USD
5,699 USD
Production
End-of-life
End-of-life
Predecessor
GeForce 500
Tesla Maxwell
Successor
GeForce 700
Tesla Volta