GeForce 7900 GX2 vs 6800 Ultra

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking	1385	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	0.32	no data
Architecture	Curie (2003−2013)	Curie (2003−2013)
GPU code name	NV45	G71
Market segment	Desktop	Desktop
Release date	26 July 2004 (22 years ago)	30 April 2006 (20 years ago)
Launch price (MSRP)	$499	$599

Cost-effectiveness evaluation

The higher the ratio, the better. We use the manufacturer's recommended prices.

Performance to price scatter graph

Currently popular graphics cards are shown for comparison.

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.

Core clock speed	425 MHz	500 MHz
Number of transistors	222 million	278 million
Manufacturing process technology	130 nm	90 nm
Power consumption (TDP)	81 Watt	no data
Texture fill rate	6.800	12.00 ×2
ROPs	16	16 ×2
TMUs	16	24 ×2

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 1.0 x16	PCIe 1.0 x16
Length	197 mm	312 mm
Width	2-slot	2-slot
Supplementary power connectors	1x 6-pin	2x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR3	GDDR3
Maximum RAM amount	256 MB	512 MB ×2
Memory bus width	256 Bit	256 Bit ×2
Memory clock speed	550 MHz	600 MHz
Memory bandwidth	35.2 GB/s	38.4 GB/s ×2

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors

2x DVI, 1x S-Video

2x DVI, 1x S-Video

API and SDK support

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	9.0c (9_3)	9.0c (9_3)
Shader Model	3.0	3.0
OpenGL	2.1	2.1
OpenCL	N/A	N/A
Vulkan	N/A	N/A

Pros & cons summary

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Recency	26 July 2004	30 April 2006
Maximum RAM amount	256 MB	512 MB
Chip lithography	130 nm	90 nm