Product comparison · 2 gpus

GIGABYTE GV-R645OC-1GI graphics card AMD Radeon HD6450 vs GIGABYTE GV-R657OC-1GI graphics card AMD Radeon HD6570

Key differences

Graphics processor
- GV-R645OC-1GI graphics card AMD Radeon HD6450:Radeon HD6450
- GV-R657OC-1GI graphics card AMD Radeon HD6570:Radeon HD6570
Processor frequency
- GV-R645OC-1GI graphics card AMD Radeon HD6450:675 MHz
- GV-R657OC-1GI graphics card AMD Radeon HD6570:670 MHz
Memory bus
- GV-R645OC-1GI graphics card AMD Radeon HD6450:64 bit
- GV-R657OC-1GI graphics card AMD Radeon HD6570:128 bit
Depth
- GV-R645OC-1GI graphics card AMD Radeon HD6450:21.7 mm
- GV-R657OC-1GI graphics card AMD Radeon HD6570:32.5 mm
Height
- GV-R645OC-1GI graphics card AMD Radeon HD6450:121 mm
- GV-R657OC-1GI graphics card AMD Radeon HD6570:129.9 mm

Differences highlightedShow differences only

Comparison of GV-R645OC-1GI, GV-R657OC-1GI
32 specifications	A GIGABYTE GV-R645OC-1GI graphics card AMD Radeon HD6450 Model GV-R645OC-1GI View product	B GIGABYTE GV-R657OC-1GI graphics card AMD Radeon HD6570 Model GV-R657OC-1GI View product
Processor2 differ
Graphics processor family	AMD	AMD
Graphics processorDiffers	Radeon HD6450	Radeon HD6570
Maximum resolution	2560 x 1600 pixels	2560 x 1600 pixels
CUDA	No	No
Processor frequencyDiffers	675 MHz	670 MHz
Maximum analog resolution	2048 x 1536 pixels	2048 x 1536 pixels
Memory1 differ
Discrete graphics card memory	1 GB	1 GB
Graphics card memory type	GDDR3	GDDR3
Memory busDiffers	64 bit	128 bit
Memory clock speed	1600 MHz	1600 MHz
Ports & interfacesidentical
Interface type	PCI Express 2.1	PCI Express 2.1
HDMI ports quantity	1	1
DVI-D ports quantity	1	1
VGA (D-Sub) ports quantity	1	1
Performanceidentical
PhysX	No	No
TV tuner integrated	No	No
DirectX version	11	11
OpenGL version	4.1	4.1
HDCP	Yes	Yes
Dual Link DVI	Yes	Yes
Full HD	Yes	Yes
Design1 differ
Cooling type	Active	Active
Form factorDiffers	Half-Height/Half-Length (HH/HL)	Full-Height/Full-Length (FH/FL)
CertificationKnown for one	RoHS	Unknown — not stated by the source
Bracket heightKnown for one	Unknown — not stated by the source	Full-Height (FH)
Poweridentical
Minimum system power supply	400 W	400 W
Weight & dimensions2 differ
LengthKnown for one	180 mm	Unknown — not stated by the source
DepthDiffers	21.7 mm	32.5 mm
HeightDiffers	121 mm	129.9 mm
Other featuresidentical
Mac compatibility	No	No
HDMI	Yes	Yes
Compatible operating systems	Windows 7	Windows 7

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.