Product comparison · 2 gpus

Lenovo 45J7917 graphics card GDDR2 vs Lenovo 45K1636 graphics card GDDR3

Key differences

Graphics card memory type
- 45J7917 graphics card GDDR2:GDDR2
- 45K1636 graphics card GDDR3:GDDR3
Memory bus
- 45J7917 graphics card GDDR2:128 bit
- 45K1636 graphics card GDDR3:64 bit
Interface type
- 45J7917 graphics card GDDR2:PCI Express x16
- 45K1636 graphics card GDDR3:PCI Express 2.0
VGA (D-Sub) ports quantity
- 45J7917 graphics card GDDR2:2
- 45K1636 graphics card GDDR3:1
DirectX version
- 45J7917 graphics card GDDR2:10.0
- 45K1636 graphics card GDDR3:10.1
OpenGL version
- 45J7917 graphics card GDDR2:2.1
- 45K1636 graphics card GDDR3:2.0

Differences highlightedShow differences only

Comparison of 45J7917, 45K1636
21 specifications	A Lenovo 45J7917 graphics card GDDR2 Model 45J7917 View product	B Lenovo 45K1636 graphics card GDDR3 Model 45K1636 View product
Processoridentical
Maximum resolution	2560 x 1600 pixels	2560 x 1600 pixels
Memory2 differ
Graphics card memory typeDiffers	GDDR2	GDDR3
Memory busDiffers	128 bit	64 bit
Data transfer rateKnown for one	12.8 Gbit/s	Unknown — not stated by the source
Ports & interfaces2 differ
Interface typeDiffers	PCI Express x16	PCI Express 2.0
VGA (D-Sub) ports quantityDiffers	2	1
DVI ports quantityKnown for one	2	Unknown — not stated by the source
Dual VGAKnown for one	Yes	Unknown — not stated by the source
Performance2 differ
DirectX versionDiffers	10.0	10.1
OpenGL versionDiffers	2.1	2.0
HDCPKnown for one	Unknown — not stated by the source	Yes
Shader model versionKnown for one	4.0	Unknown — not stated by the source
Dual Link DVIKnown for one	Yes	Unknown — not stated by the source
Designidentical
Cooling type	Active	Active
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	10 - 35 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	8 - 80%
Weight & dimensionsidentical
WeightKnown for one	Unknown — not stated by the source	430 g
LengthKnown for one	Unknown — not stated by the source	167 mm
DepthKnown for one	Unknown — not stated by the source	21 mm
HeightKnown for one	Unknown — not stated by the source	69 mm
Other featuresidentical
Mac compatibility	No	No

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.