NVIDIA GeForce GTX 660 vs AMD Radeon R9 270X
NVIDIA GeForce GTX 660
$230
AMD Radeon R9 270X
$199
|
960 Shaders
2GB GDDR5
1084MHz
|
1280 Shaders
2GB GDDR5
1050MHz
|
|
Peak AI Performance
2.08 TOPS
INT32
|
Peak AI Performance
2.69 TFLOPS
FP32
|
|
FP32
2.08 TFLOPS
|
FP32
2.69 TFLOPS
|
|
Form Factor
PCIe Card
2.0-Slots
|
Form Factor
PCIe Card
2.0-Slots
|
|
TDP
140W
|
TDP
180W
|
|
Power Connectors
1x 6-Pin
|
Power Connectors
2x 6-Pin
|
Peak AI Performance
|
|
GeForce GTX 660 - 2.08 TOPS INT32
x1
Radeon R9 270X - 2.69 TFLOPS FP32
x1.29
FP32
|
|
GeForce GTX 660 - 2.08 TFLOPS FP32
x1
Radeon R9 270X - 2.69 TFLOPS FP32
x1.29
|
|
GeForce GTX 660 - 144.2GB/s
x1
Radeon R9 270X - 179.2GB/s
x1.24
|
|
GeForce GTX 660 - 140W
x1
Radeon R9 270X - 180W
x1.29
|
GB6 OpenCL N/A
0%
|
|
|
GB6 Metal N/A
0%
|
|
|
GB6 Vulkan N/A
0%
|
|
0%
|
0%
|
|
0%
|
0%
|
|
0%
|
0%
|
|
0%
|
0%
|
|
0%
|
0%
|
|
0%
|
0%
|
|
Manufacturer
NVIDIA
|
Manufacturer
AMD
|
|
Chip Designer
NVIDIA
|
Chip Designer
AMD
|
|
Architecture
Kepler
|
Architecture
GCN 1
|
|
Family
GeForce 600
|
Family
Radeon R 200
|
|
Codename
NVE6
GK106
Variant
GK106-400-A1
|
Codename
Pitcairn
-
Variant
Curacao XT
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
9/13/2012
|
Release Date
8/8/2013
|
|
Foundry
TSMC
|
Foundry
TSMC
|
|
Fabrication Node
28nm
|
Fabrication Node
28nm
|
|
Die Size
221 mm²
|
Die Size
212 mm²
|
|
Transistor Count
2.5 Billion
|
Transistor Count
2.8 Billion
|
|
Transistor Density
11.49M/mm²
|
Transistor Density
13.21M/mm²
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
960 Shaders
|
Shading Units
1280 Shaders
|
|
Texture Mapping Units
80 TMUs
|
Texture Mapping Units
80 TMUs
|
|
Render Output Units
24 ROPs
|
Render Output Units
32 ROPs
|
|
Streaming Multiprocessors
5 SMs
|
-
-
|
|
-
-
|
Compute Units
20 CUs
|
|
980MHz Base
1084MHz
|
1000MHz Base
1050MHz
|
|
Peak AI Performance
2.08 TOPS
INT32
|
Peak AI Performance
2.69 TFLOPS
FP32
|
|
FP32
2.08 TFLOPS
|
FP32
2.69 TFLOPS
|
|
FP64
90 GFLOPS
|
FP64
170 GFLOPS
|
|
INT32
2.08 TOPS
|
-
-
|
|
Pixel Fillrate
26.016 GPixel/s
|
Pixel Fillrate
33.6 GPixel/s
|
|
Texture Fillrate
86.72 GTexel/s
|
Texture Fillrate
84 GTexel/s
|
|
L1
48KB/SM Tex
16KB/SM
-
|
L1
-
-
16KB/CU
|
|
L2
512KB Shared
|
L2
512KB Shared
|
|
2GB
GDDR5
|
2GB
GDDR5
|
|
Bus Width
192Bit
|
Bus Width
256Bit
|
|
Clock
1502MHz
Transfer Rate
6GT/s
Bandwidth
144.2GB/s
|
Clock
1400MHz
Transfer Rate
5.6GT/s
Bandwidth
179.2GB/s
|
|
TDP
140W
|
TDP
180W
|
|
1x DVI-I Dual-Link
1x DVI-D Dual-Link
1x DisplayPort 1.2
1x HDMI 1.4
|
1x DVI-I Dual-Link
1x DVI-D Dual-Link
1x DisplayPort 1.2
1x HDMI 1.4
|
|
Max Resolution
4096x2304
|
Max Resolution
4096x2160
|
|
Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
G-Sync
FreeSync
|
Variable Refresh Rate
-
-
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
3
|
Multi Monitor Support
3
|
|
Model
NVENC 1
|
Model
VCE 1.0
|
|
Codec
AVC (H.264)
|
Codec
AVC (H.264)
|
|
Model
NVDEC 1
|
Model
UVD 3.2
|
|
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
|
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
|
|
Direct X
12
Direct 3D
11_0
|
Direct X
12
Direct 3D
11_1
|
|
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
|
Shader Model
6.5
CUDA
3.0
-
-
PureVideo HD
VP5
VDPAU
Feature Set D
|
Shader Model
6.5
-
-
GFX
6
-
-
-
-
|
|
1x Fan
|
1x Fan
|
|
Power Connectors
1x 6-Pin
|
Power Connectors
2x 6-Pin
|
|
Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
|
Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
|
|
Multi GPU Support
Supported
Type
2-way SLI
|
Multi GPU Support
Supported
Type
2-way CrossFireX
|
|
Height
111 mm (4.37 in)
Width
241 mm (9.49 in)
Depth
38 mm (1.5 in)
|
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