NVIDIA GeForce GTX 780 Ti Engineering Sample vs NVIDIA GeForce GTX 660 OEM
GPU Specs Compare
Graphics Card
Release Date
Unknown
Aug 2012
Generation
GeForce 700
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
875 MHz
823 MHz
Boost Clock
928 MHz
888 MHz
Memory Clock
1753 MHz
1400 MHz
Memory
Memory Size
3GB
1536MB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
192bit
Bandwidth
336.6GB/s
134.4GB/s
Render Config
Shading Units
2880
1152
TMUs
240
96
ROPs
48
24
L1 Cache
16 KB (per SMX)
16 KB (per SMX)
L2 Cache
1536 KB
384 KB
Theoretical Performance
Pixel Rate
55.68 GPixel/s
21.31 GPixel/s
Texture Rate
222.7 GTexel/s
85.25 GTexel/s
FP32 (float)
5.345 TFLOPS
2.046 TFLOPS
FP64 (double)
222.7 GFLOPS
85.25 GFLOPS
Graphics Processor
GPU Name
GK180
GK104
GPU Variant
GK180-425-A1
GK104-200-KD-A2
Architecture
Kepler
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
3.54 billion
Die Size
561 mm²
294 mm²
Board Design
TDP
250W
130W
Suggested PSU
600 W
300 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Graphics Features
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.2.175
1.1
CUDA
3.5
3.0
Shader Model
5.1
5.1
📊 Benchmark
3DMark Time Spy
-
1,194
3DMark Time Spy Extreme
-
260