AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce GTX 660 Ti
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 GHz Edition 's Advantages
Larger VRAM bandwidth (153.6GB/s vs 144.2GB/s)
NVIDIA GeForce GTX 660 Ti 's Advantages
Boost Clock980MHz
64 additional rendering cores
Lower TDP (150W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 GHz Edition
2.56 TFLOPS
GeForce GTX 660 Ti
+2%
2.634 TFLOPS
Graphics Card
Mar 2012
Release Date
Aug 2012
Southern Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
915 MHz
-
Boost Clock
980 MHz
1200 MHz
Memory Clock
1502 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
192bit
153.6GB/s
Bandwidth
144.2GB/s
Render Config
20
Compute Units
-
-
-
-
1280
Shading Units
1344
80
TMUs
112
32
ROPs
24
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
384 KB
-
-
-
Theoretical Performance
32.00 GPixel/s
Pixel Rate
27.44 GPixel/s
80.00 GTexel/s
Texture Rate
109.8 GTexel/s
-
-
-
2.560 TFLOPS
FP32 (float)
2.634 TFLOPS
160.0 GFLOPS
FP64 (double)
109.8 GFLOPS
Board Design
175W
TDP
150W
450 W
Suggested PSU
450 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
2x 6-pin
Power Connectors
2x 6-pin
Graphics Processor
Pitcairn
GPU Name
GK104
Pitcairn XT
(215-0828047)
GPU Variant
GK104-300-KD-A2
GCN 1.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
3.54 billion
212 mm²
Die Size
294 mm²
Graphics Features
12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.2
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
5.1
Shader Model
5.1
