Compare any two graphics cards:
VS

GeForce 9800 GX2 vs Radeon HD 6770 1GB

Intro

The GeForce 9800 GX2 features a clock frequency of 600 MHz and a GDDR3 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 65 nm design. It features 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 6770 1GB, which features a clock frequency of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It features 800 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB 108 Watts
GeForce 9800 GX2 197 Watts
Difference: 89 Watts (82%)

Memory Bandwidth

Theoretically, the GeForce 9800 GX2 should be much faster than the Radeon HD 6770 1GB overall. (explain)

GeForce 9800 GX2 128000 MB/sec
Radeon HD 6770 1GB 67200 MB/sec
Difference: 60800 (90%)

Texel Rate

The GeForce 9800 GX2 will be a lot (approximately 113%) more effective at AF than the Radeon HD 6770 1GB. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
Radeon HD 6770 1GB 36000 Mtexels/sec
Difference: 40800 (113%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 9800 GX2 is a better choice, by a large margin. (explain)

GeForce 9800 GX2 19200 Mpixels/sec
Radeon HD 6770 1GB 14400 Mpixels/sec
Difference: 4800 (33%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Display Prices

Hide Prices

GeForce 9800 GX2

Amazon.com

Check prices at:

Radeon HD 6770 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

Hide Specifications

Model GeForce 9800 GX2 Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year Mar 2008 January 2011
Code Name G92 Juniper XT
Memory 512 MB (x2) 1024 MB
Core Speed 600 MHz (x2) 900 MHz
Memory Speed 2000 MHz (x2) 4200 MHz
Power (Max TDP) 197 watts 108 watts
Bandwidth 128000 MB/sec 67200 MB/sec
Texel Rate 76800 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 128 (x2) 800
Texture Mapping Units 64 (x2) 40
Render Output Units 16 (x2) 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 1040 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GX2

Amazon.com

Check prices at:

Radeon HD 6770 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield