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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

NVIDIA GeForce GTX 660 Ti

323%
323%

AMD Radeon HD 7850

80%
80%
NVIDIA GeForce GTX 660 Ti is approximately 243% faster

Technical Specifications

SpecificationNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
Graphics ProcessorDifferent
GK104
Pitcairn
CoresDifferent
1344
1024
TMUsDifferent
112
64
ROPsDifferent
24
32
Memory Size
2 GB
2 GB
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
192 bit
256 bit

Graphics Processor

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
GPU NameDifferent
GK104
Pitcairn
GPU VariantDifferent
GK104-300-KD-A2
Pitcairn PRO(215-0828062)
ArchitectureDifferent
Kepler
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
TransistorsDifferent
3,540 million
2,800 million
DensityDifferent
12.0M / mm²
13.2M / mm²
Die SizeDifferent
294 mm²
212 mm²
Chip PackageDifferent
BGA-1745
FCBGA-1737

Graphics Card

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
Release DateDifferent
Aug 16th, 2012
Mar 5th, 2012
GenerationDifferent
GeForce 600
Southern Islands(HD 7800)
PredecessorDifferent
GeForce 500
Northern Islands
SuccessorDifferent
GeForce 700
Sea Islands
Production
End-of-life
End-of-life
Launch PriceDifferent
299 USD
249 USD
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
ReviewsDifferent
83 in our database
71 in our database

Clock Speeds

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
Base ClockDifferent
915 MHz
N/A
Boost ClockDifferent
980 MHz
N/A
Memory ClockDifferent
1502 MHz6 Gbps effective
1200 MHz4.8 Gbps effective
GPU ClockDifferent
N/A
860 MHz

Memory

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
Memory Size
2 GB
2 GB
Memory Type
GDDR5
GDDR5
Memory BusDifferent
192 bit
256 bit
BandwidthDifferent
144.2 GB/s
153.6 GB/s

Render Config

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
Shading UnitsDifferent
1344
1024
TMUsDifferent
112
64
ROPsDifferent
24
32
SMX CountDifferent
7
N/A
L1 CacheDifferent
16 KB (per SMX)
16 KB (per CU)
L2 CacheDifferent
384 KB
512 KB
Compute UnitsDifferent
N/A
16

Theoretical Performance

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
Pixel RateDifferent
27.44 GPixel/s
27.52 GPixel/s
Texture RateDifferent
109.8 GTexel/s
55.04 GTexel/s
FP32 (float)Different
2.634 TFLOPS
1.761 TFLOPS
FP64 (double)Different
109.8 GFLOPS (1:24)
110.1 GFLOPS (1:16)

Board Design

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
Slot Width
Dual-slot
Dual-slot
LengthDifferent
241 mm9.5 inches
210 mm8.3 inches
TDPDifferent
150 W
130 W
Suggested PSUDifferent
450 W
300 W
OutputsDifferent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power ConnectorsDifferent
2x 6-pin
1x 6-pin
Board NumberDifferent
P2004 SKU 1
109-C40147-00, 109-C40337-00A

Graphics Features

FeatureNVIDIA GeForce GTX 660 TiAMD Radeon HD 7850
DirectXDifferent
12 (11_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCLDifferent
3.0
2.1 (1.2)
VulkanDifferent
1.2.175
1.2.170
CUDADifferent
3.0
N/A
Shader Model
6.5 (5.1)
6.5 (5.1)

Comparison Summary

7
Specifications Compared
8
Feature Categories
49
Detailed Features

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