NVIDIA GeForce GTX 660 Ti vs AMD Radeon HD 8770 OEM
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti and 1024MB VRAM Radeon HD 8770 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660 Ti 's Advantages
Boost Clock980MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (144.2GB/s vs 96.00GB/s)
448 additional rendering cores
AMD Radeon HD 8770 OEM 's Advantages
Released 1 years and 1 months late
Lower TDP (85W vs 150W)
Score
Benchmark
FP32 (float)
GeForce GTX 660 Ti
+39%
2.634 TFLOPS
Radeon HD 8770 OEM
1.882 TFLOPS
Graphics Card
Aug 2012
Release Date
Sep 2013
GeForce 600
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
915 MHz
Base Clock
-
980 MHz
Boost Clock
-
1502 MHz
Memory Clock
1500 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
128bit
144.2GB/s
Bandwidth
96.00GB/s
Render Config
-
Compute Units
14
-
-
-
1344
Shading Units
896
112
TMUs
56
24
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
27.44 GPixel/s
Pixel Rate
16.80 GPixel/s
109.8 GTexel/s
Texture Rate
58.80 GTexel/s
-
-
-
2.634 TFLOPS
FP32 (float)
1.882 TFLOPS
109.8 GFLOPS
FP64 (double)
117.6 GFLOPS
Board Design
150W
TDP
85W
450 W
Suggested PSU
250 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
1x 6-pin
Graphics Processor
GK104
GPU Name
Bonaire
GK104-300-KD-A2
GPU Variant
Bonaire XT
(215-0839039)
Kepler
Architecture
GCN 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
2.08 billion
294 mm²
Die Size
160 mm²
Graphics Features
12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.0
1.1
Vulkan
1.2
3.0
CUDA
-
5.1
Shader Model
6.3
