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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

NVIDIA GeForce GTX 660

97%
97%

ATI Radeon HD 5970

117%
117%
ATI Radeon HD 5970 is approximately 20% faster

Technical Specifications

SpecificationNVIDIA GeForce GTX 660ATI Radeon HD 5970
Graphics ProcessorDifferent
GK106
Hemlock x2
CoresDifferent
960
1600 x2
TMUsDifferent
80
80 x2
ROPsDifferent
24
32 x2
Memory SizeDifferent
2 GB
1024 MB x2
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
192 bit
256 bit x2

Graphics Processor

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
GPU NameDifferent
GK106
Hemlock
GPU VariantDifferent
GK106-400-A1
Hemlock XT(215-0735075)
ArchitectureDifferent
Kepler
TeraScale 2
Foundry
TSMC
TSMC
Process SizeDifferent
28 nm
40 nm
TransistorsDifferent
2,540 million
2,154 million
DensityDifferent
11.5M / mm²
6.4M / mm²
Die SizeDifferent
221 mm²
334 mm²
Chip PackageDifferent
BGA-1425
N/A

Graphics Card

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
Release DateDifferent
Sep 6th, 2012
Nov 18th, 2009
GenerationDifferent
GeForce 600
Evergreen(HD 5900)
PredecessorDifferent
GeForce 500
Radeon R700
SuccessorDifferent
GeForce 700
Northern Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
229 USD
699 USD
Bus InterfaceDifferent
PCIe 3.0 x16
PCIe 2.0 x16
ReviewsDifferent
77 in our database
74 in our database

Clock Speeds

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
Base ClockDifferent
980 MHz
N/A
Boost ClockDifferent
1032 MHz
N/A
Memory ClockDifferent
1502 MHz6 Gbps effective
1000 MHz4 Gbps effective
GPU ClockDifferent
N/A
725 MHz

Memory

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
Memory SizeDifferent
2 GB
1024 MB
Memory Type
GDDR5
GDDR5
Memory BusDifferent
192 bit
256 bit
BandwidthDifferent
144.2 GB/s
128.0 GB/s

Render Config

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
Shading UnitsDifferent
960
1600
TMUs
80
80
ROPsDifferent
24
32
SMX CountDifferent
5
N/A
L1 CacheDifferent
16 KB (per SMX)
8 KB (per CU)
L2 CacheDifferent
384 KB
512 KB
Compute UnitsDifferent
N/A
20

Theoretical Performance

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
Pixel RateDifferent
20.64 GPixel/s
23.20 GPixel/s
Texture RateDifferent
82.56 GTexel/s
58.00 GTexel/s
FP32 (float)Different
1.981 TFLOPS
2.320 TFLOPS
FP64 (double)Different
82.56 GFLOPS (1:24)
464.0 GFLOPS (1:5)

Board Design

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
Slot Width
Dual-slot
Dual-slot
LengthDifferent
241 mm9.5 inches
311 mm12.2 inches
TDPDifferent
140 W
294 W
Suggested PSUDifferent
300 W
600 W
OutputsDifferent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x mini-DisplayPort 1.1
Power ConnectorsDifferent
1x 6-pin
1x 6-pin + 1x 8-pin
Board NumberDifferent
P2030 SKU 0
109-C00037-00
HeightDifferent
N/A
111 mm4.4 inches
WidthDifferent
N/A
37 mm1.5 inches

Graphics Features

FeatureNVIDIA GeForce GTX 660ATI Radeon HD 5970
DirectXDifferent
12 (11_0)
11.2 (11_0)
OpenGLDifferent
4.6
4.4
OpenCLDifferent
3.0
1.2
VulkanDifferent
1.2.175
N/A
CUDADifferent
3.0
N/A
Shader ModelDifferent
6.5 (5.1)
5.0

Comparison Summary

7
Specifications Compared
8
Feature Categories
51
Detailed Features

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