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GeForce 9800 GT 1GB vs Radeon HD 6770

Intro

The GeForce 9800 GT 1GB has a GPU clock speed of 600 MHz, and the 1024 MB of GDDR3 RAM is set to run at 900 MHz through a 256-bit bus. It also is comprised of 112 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon HD 6770, which makes use of a 40 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory is set to run at a frequency of 1050 MHz on this card. It features 800 SPUs along with 40 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB 105 Watts
Radeon HD 6770 108 Watts
Difference: 3 Watts (3%)

Memory Bandwidth

The Radeon HD 6770, in theory, should perform a small bit faster than the GeForce 9800 GT 1GB in general. (explain)

Radeon HD 6770 67200 MB/sec
GeForce 9800 GT 1GB 57600 MB/sec
Difference: 9600 (17%)

Texel Rate

The Radeon HD 6770 is just a bit (approximately 7%) more effective at anisotropic filtering than the GeForce 9800 GT 1GB. (explain)

Radeon HD 6770 36000 Mtexels/sec
GeForce 9800 GT 1GB 33600 Mtexels/sec
Difference: 2400 (7%)

Pixel Rate

The Radeon HD 6770 should be much (about 50%) more effective at FSAA than the GeForce 9800 GT 1GB, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 6770 14400 Mpixels/sec
GeForce 9800 GT 1GB 9600 Mpixels/sec
Difference: 4800 (50%)

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.

Price Comparison

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GeForce 9800 GT 1GB

Amazon.com

Check prices at:

Radeon HD 6770

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

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Model GeForce 9800 GT 1GB Radeon HD 6770
Manufacturer nVidia AMD
Year July 2008 January 2011
Code Name G92a/b Juniper XT
Memory 1024 MB 512 MB
Core Speed 600 MHz 900 MHz
Memory Speed 1800 MHz 4200 MHz
Power (Max TDP) 105 watts 108 watts
Bandwidth 57600 MB/sec 67200 MB/sec
Texel Rate 33600 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 112 800
Texture Mapping Units 56 40
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GT 1GB

Amazon.com

Check prices at:

Radeon HD 6770

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.

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