Product comparison · 2 gpus

GIGABYTE GV-N640OC-2GI REV2.0 vs GIGABYTE GV-R799D5-6GD-B graphics card AMD Radeon HD7990

29specifications compared
19differ
10identical
12known for one product only

Key differences

Graphics processor family
- GV-N640OC-2GI REV2.0:NVIDIA
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:AMD
Graphics processor
- GV-N640OC-2GI REV2.0:GeForce GT 640
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:Radeon HD7990
Processor frequency
- GV-N640OC-2GI REV2.0:900 MHz
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:950 MHz
Processor boost clock speed
- GV-N640OC-2GI REV2.0:941 MHz
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:1000 MHz
Maximum displays per videocard
- GV-N640OC-2GI REV2.0:4
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:5
Discrete graphics card memory
- GV-N640OC-2GI REV2.0:2 GB
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:6 GB
Graphics card memory type
- GV-N640OC-2GI REV2.0:GDDR3
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:GDDR5
Memory bus
- GV-N640OC-2GI REV2.0:128 bit
- GV-R799D5-6GD-B graphics card AMD Radeon HD7990:768 bit

Side by side

Differences highlightedShow differences only

Comparison of GV-N640OC-2GI REV2.0, GV-R799D5-6GD-B
41 specifications	A GIGABYTE GV-N640OC-2GI REV2.0 View product	B GIGABYTE GV-R799D5-6GD-B graphics card AMD Radeon HD7990 Model GV-R799D5-6GD-B View product
Processor5 differ
Graphics processor familyDiffers	NVIDIA	AMD
Graphics processorDiffers	GeForce GT 640	Radeon HD7990
Maximum resolution	2560 x 1600 pixels	2560 x 1600 pixels
CUDAKnown for one	Yes	Unknown — not stated by the source
CUDA coresKnown for one	384	Unknown — not stated by the source
Processor frequencyDiffers	900 MHz	950 MHz
Processor boost clock speedDiffers	941 MHz	1000 MHz
FireStreamKnown for one	No	Unknown — not stated by the source
Maximum analog resolution	2048 x 1536 pixels	2048 x 1536 pixels
Maximum digital resolution	2560 x 1600 pixels	2560 x 1600 pixels
Maximum displays per videocardDiffers	4	5
Memory4 differ
Discrete graphics card memoryDiffers	2 GB	6 GB
Graphics card memory typeDiffers	GDDR3	GDDR5
Memory busDiffers	128 bit	768 bit
Memory clock speedDiffers	1800 MHz	6000 MHz
Ports & interfaces4 differ
Interface type	PCI Express 3.0	PCI Express 3.0
HDMI ports quantityDiffers	1	0
DVI-D ports quantityDiffers	2	0
DVI-I ports quantityDiffers	0	1
DisplayPorts quantityKnown for one	0	Unknown — not stated by the source
VGA (D-Sub) ports quantityDiffers	1	0
Mini DisplayPorts quantityKnown for one	Unknown — not stated by the source	4
Performance2 differ
PhysXDiffers	Yes	No
TV tuner integrated	No	No
DirectX version	11.1	11.1
OpenGL versionDiffers	4.3	4.2
Dual Link DVI	Yes	Yes
NVIDIA 3D VisionKnown for one	Yes	Unknown — not stated by the source
Full HD	Yes	Yes
Design1 differ
Cooling type	Active	Active
Bracket height	Full-Height (FH)	Full-Height (FH)
Form factorDiffers	Full-Height/Half-Length (FH/HL)	Full-Height/Full-Length (FH/FL)
Number of slotsKnown for one	2	Unknown — not stated by the source
Product colourKnown for one	Black, Blue, Silver	Unknown — not stated by the source
Poweridentical
Minimum system power supplyKnown for one	350 W	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	750 W
Supplementary power connectorsKnown for one	Unknown — not stated by the source	2x 8-pin
Weight & dimensions3 differ
LengthDiffers	190 mm	320 mm
DepthDiffers	42 mm	40 mm
HeightDiffers	136.8 mm	126 mm
Technical detailsidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source

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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