GeForce GTX 660 Ti vs Radeon HD 6870 X2
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 660 Ti 's Advantages
Released 1 years and 1 months late
Boost Clock980MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (144.2GB/s vs 134.4GB/s)
224 additional rendering cores
Lower TDP (150W vs 300W)
Score
Benchmark
FP32 (float)
GeForce GTX 660 Ti
+30%
2634
Radeon HD 6870 X2
2016
Graphics Card
Aug 2012
Release Date
Jul 2011
GeForce 600
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
915 MHz
Base Clock
-
980 MHz
Boost Clock
-
1502 MHz
Memory Clock
1050 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
256bit
144.2GB/s
Bandwidth
134.4GB/s
Render Config
-
Compute Units
14
1344
Shading Units
1120
112
TMUs
56
24
ROPs
32
16 KB (per SMX)
L1 Cache
8 KB (per CU)
384 KB
L2 Cache
512 KB
Theoretical Performance
27.44 GPixel/s
Pixel Rate
28.80 GPixel/s
109.8 GTexel/s
Texture Rate
50.40 GTexel/s
2.634 TFLOPS
FP32 (float)
2.016 TFLOPS
109.8 GFLOPS
FP64 (double)
-
Board Design
150W
TDP
300W
450 W
Suggested PSU
700 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1
2x 6-pin
Power Connectors
-
Graphics Processor
GK104
GPU Name
Barts
GK104-300-KD-A2
GPU Variant
Barts XT
(215-0798000)
Kepler
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
3.54 billion
Transistors
1.7 billion
294 mm²
Die Size
255 mm²
Graphics Features
12 (11_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
5.0