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GeForce 9800 GTX+ vs Radeon HD 6770 1GB

Intro

The GeForce 9800 GTX+ comes with a GPU clock speed of 738 MHz, and the 512 MB of GDDR3 memory is set to run at 1100 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 Texture Address Units, and 16 ROPs.

Compare all that to the Radeon HD 6770 1GB, which has a clock speed of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It is made up of 800 SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB 108 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 37 Watts (34%)

Memory Bandwidth

The GeForce 9800 GTX+ should theoretically be a bit faster than the Radeon HD 6770 1GB in general. (explain)

GeForce 9800 GTX+ 70400 MB/sec
Radeon HD 6770 1GB 67200 MB/sec
Difference: 3200 (5%)

Texel Rate

The GeForce 9800 GTX+ is much (about 31%) better at texture filtering than the Radeon HD 6770 1GB. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
Radeon HD 6770 1GB 36000 Mtexels/sec
Difference: 11232 (31%)

Pixel Rate

The Radeon HD 6770 1GB is a lot (approximately 22%) better at AA than the GeForce 9800 GTX+, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
GeForce 9800 GTX+ 11808 Mpixels/sec
Difference: 2592 (22%)

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 GTX+

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

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Model GeForce 9800 GTX+ Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year July 2008 January 2011
Code Name G92b Juniper XT
Memory 512 MB 1024 MB
Core Speed 738 MHz 900 MHz
Memory Speed 2200 MHz 4200 MHz
Power (Max TDP) 145 watts 108 watts
Bandwidth 70400 MB/sec 67200 MB/sec
Texel Rate 47232 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 128 800
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 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 max amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GTX+

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.

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