Product comparison · 2 gpus

HP 398686-001 graphics card GDDR vs HP KT979AA graphics card GDDR4

8specifications compared
7differ
1identical
16known for one product only

Key differences

Maximum resolution
- 398686-001 graphics card GDDR:2048 x 1536 pixels
- KT979AA graphics card GDDR4:2560 x 1600 pixels
Graphics card memory type
- 398686-001 graphics card GDDR:GDDR
- KT979AA graphics card GDDR4:GDDR4
Memory bus
- 398686-001 graphics card GDDR:32 bit
- KT979AA graphics card GDDR4:256 bit
Interface type
- 398686-001 graphics card GDDR:PCI
- KT979AA graphics card GDDR4:PCI Express x16
DirectX version
- 398686-001 graphics card GDDR:9.0
- KT979AA graphics card GDDR4:10.1
Cooling type
- 398686-001 graphics card GDDR:Passive
- KT979AA graphics card GDDR4:Active

Side by side

Differences highlightedShow differences only

Comparison of 398686-001, KT979AA
24 specifications	A HP 398686-001 graphics card GDDR Model 398686-001 View product	B HP KT979AA graphics card GDDR4 Model KT979AA View product
Processor1 differ
Maximum resolutionDiffers	2048 x 1536 pixels	2560 x 1600 pixels
Graphics card RAMDACKnown for one	Unknown — not stated by the source	400 MHz
Maximum digital resolutionKnown for one	Unknown — not stated by the source	2560 x 1600 pixels
Memory2 differ
Graphics card memory typeDiffers	GDDR	GDDR4
Memory busDiffers	32 bit	256 bit
Memory bandwidth (max)Known for one	Unknown — not stated by the source	72 GB/s
Memory clock speedKnown for one	350 MHz	Unknown — not stated by the source
Ports & interfaces1 differ
Interface typeDiffers	PCI	PCI Express x16
I/O portsKnown for one	Unknown — not stated by the source	1 x DiplayPort
DVI-I ports quantityKnown for one	1	Unknown — not stated by the source
DVI ports quantityKnown for one	1	Unknown — not stated by the source
TV-outKnown for one	Yes	Unknown — not stated by the source
VGA (D-Sub) ports quantityKnown for one	2	Unknown — not stated by the source
Performance1 differ
DirectX versionDiffers	9.0	10.1
Shader model versionKnown for one	Unknown — not stated by the source	4.1
OpenGL versionKnown for one	Unknown — not stated by the source	2.1
Dual Link DVIKnown for one	Unknown — not stated by the source	Yes
TV tuner integratedKnown for one	No	Unknown — not stated by the source
Design1 differ
Cooling typeDiffers	Passive	Active
Bracket heightKnown for one	Unknown — not stated by the source	Full-Height (FH)
Form factorKnown for one	Unknown — not stated by the source	Full-Height/Full-Length (FH/FL)
Other features1 differ
Mac compatibility	No	No
Compatible operating systemsDiffers	Microsoft Windows 2000 / NT4.0, Microsoft Windows XP	Genuine Windows Vista Business 32; Genuine Windows Vista Business 64; Genuine Windows XP
UNSPSC-codeKnown for one	Unknown — not stated by the source	43201401

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.

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