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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

NVIDIA GeForce GTX 660

100%
100%

NVIDIA GeForce GTX 580

114%
114%
NVIDIA GeForce GTX 580 is approximately 14% faster

Technical Specifications

SpecificationNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
Graphics ProcessorDifferent
GK106
GF110
CoresDifferent
960
512
TMUsDifferent
80
64
ROPsDifferent
24
48
Memory SizeDifferent
2 GB
1536 MB
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
192 bit
384 bit

Graphics Processor

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
GPU NameDifferent
GK106
GF110
GPU VariantDifferent
GK106-400-A1
GF110-375-A1
ArchitectureDifferent
Kepler
Fermi 2.0
Foundry
TSMC
TSMC
Process SizeDifferent
28 nm
40 nm
TransistorsDifferent
2,540 million
3,000 million
DensityDifferent
11.5M / mm²
5.8M / mm²
Die SizeDifferent
221 mm²
520 mm²
Chip PackageDifferent
BGA-1425
BGA-1981

Graphics Card

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
Release DateDifferent
Sep 6th, 2012
Nov 9th, 2010
GenerationDifferent
GeForce 600
GeForce 500
PredecessorDifferent
GeForce 500
GeForce 400
SuccessorDifferent
GeForce 700
GeForce 600
Production
End-of-life
End-of-life
Launch PriceDifferent
229 USD
499 USD
Bus InterfaceDifferent
PCIe 3.0 x16
PCIe 2.0 x16
ReviewsDifferent
77 in our database
136 in our database

Clock Speeds

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
Base ClockDifferent
980 MHz
N/A
Boost ClockDifferent
1032 MHz
N/A
Memory ClockDifferent
1502 MHz6 Gbps effective
1002 MHz4 Gbps effective
GPU ClockDifferent
N/A
772 MHz
Shader ClockDifferent
N/A
1544 MHz

Memory

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
Memory SizeDifferent
2 GB
1536 MB
Memory Type
GDDR5
GDDR5
Memory BusDifferent
192 bit
384 bit
BandwidthDifferent
144.2 GB/s
192.4 GB/s

Render Config

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
Shading UnitsDifferent
960
512
TMUsDifferent
80
64
ROPsDifferent
24
48
SMX CountDifferent
5
N/A
L1 CacheDifferent
16 KB (per SMX)
64 KB (per SM)
L2 CacheDifferent
384 KB
768 KB
SM CountDifferent
N/A
16

Theoretical Performance

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
Pixel RateDifferent
20.64 GPixel/s
24.70 GPixel/s
Texture RateDifferent
82.56 GTexel/s
49.41 GTexel/s
FP32 (float)Different
1.981 TFLOPS
1.581 TFLOPS
FP64 (double)Different
82.56 GFLOPS (1:24)
197.6 GFLOPS (1:8)

Board Design

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
Slot Width
Dual-slot
Dual-slot
LengthDifferent
241 mm9.5 inches
267 mm10.5 inches
TDPDifferent
140 W
244 W
Suggested PSUDifferent
300 W
550 W
OutputsDifferent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x mini-HDMI 1.3a
Power ConnectorsDifferent
1x 6-pin
1x 6-pin + 1x 8-pin
Board NumberDifferent
P2030 SKU 0
P1261 SKU 2
HeightDifferent
N/A
111 mm4.4 inches

Graphics Features

FeatureNVIDIA GeForce GTX 660NVIDIA GeForce GTX 580
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCLDifferent
3.0
1.1
VulkanDifferent
1.2.175
N/A
CUDADifferent
3.0
2.0
Shader ModelDifferent
6.5 (5.1)
5.1

Comparison Summary

7
Specifications Compared
8
Feature Categories
51
Detailed Features

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