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
GeForce GTX 950
CORE STATE
GM206
VRAM
2 GB
CLOCK SPEED
1188 MHz
TDP
90 W
BUS WIDTH
128 bit
ARCHITECTURE
Maxwell 2.0
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
GTX 660 Ti
GTX 950
Core Specs
Shading Units
1,344
768
-42.9%
Shaders
1,344
768
-42.9%
TMUs
112
48
-57.1%
ROPs
24
32
+33.3%
Clocks
Base Clock
915 MHz
1024 MHz
Boost Clock
980 MHz
1188 MHz
Memory Clock
1502 MHz
6 Gbps effective
1653 MHz
6.6 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
GDDR5
Memory Bus
192 bit
128 bit
Bandwidth
144.2 GB/s
105.8 GB/s
Cache
L1 Cache
16 KB (per SMX)
48 KB (per SMM)
L2 Cache
384 KB
1024 KB
Performance
Pixel Rate
27.44 GPixel/s
38.02 GPixel/s
Texture Rate
109.8 GTexel/s
57.02 GTexel/s
FP32 (TFLOPS)
2.634 TFLOPS
1.825 TFLOPS
FP64 (TFLOPS)
109.8 GFLOPS (1:24)
57.02 GFLOPS (1:32)
Power
TDP
150 W
90 W
TDP (W)
150
90
-40.0%
Suggested PSU
450 W
250 W
Power Connectors
2x 6-pin
1x 6-pin
Architecture
Architecture
Kepler
Maxwell 2.0
GPU Name
GK104
GM206
Generation
GeForce 600
GeForce 900
Process Size
28 nm
28 nm
Transistors
3,540 million
2,940 million
Die Size
294 mm²
228 mm²
Foundry
TSMC
TSMC
Density
12.0M / 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
Dual-slot
Length
241 mm
9.5 inches
202 mm
8 inches
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 2.03x DisplayPort 1.2
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
299 USD
159 USD
Production
End-of-life
End-of-life
Predecessor
GeForce 500
GeForce 700
Successor
GeForce 700
GeForce 10