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GeForce 9800 GTX vs Radeon HD 5770

Intro

The GeForce 9800 GTX makes use of a 65 nm design. nVidia has set the core speed at 675 MHz. The GDDR3 memory is set to run at a frequency of 1100 MHz on this specific card. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Compare those specifications to the Radeon HD 5770, which has a core clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770 108 Watts
GeForce 9800 GTX 140 Watts
Difference: 32 Watts (30%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5770 should in theory be just a bit superior to the GeForce 9800 GTX overall. (explain)

Radeon HD 5770 76800 MB/sec
GeForce 9800 GTX 70400 MB/sec
Difference: 6400 (9%)

Texel Rate

The GeForce 9800 GTX will be a lot (about 27%) faster with regards to AF than the Radeon HD 5770. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
Radeon HD 5770 34000 Mtexels/sec
Difference: 9200 (27%)

Pixel Rate

The Radeon HD 5770 should be a lot (about 26%) more effective at FSAA than the GeForce 9800 GTX, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 5770 13600 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 2800 (26%)

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 5770

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 5770
Manufacturer nVidia AMD
Year April 2008 October 13, 2009
Code Name G92 Juniper XT
Memory 512 MB 1024 MB
Core Speed 675 MHz 850 MHz
Memory Speed 2200 MHz 4800 MHz
Power (Max TDP) 140 watts 108 watts
Bandwidth 70400 MB/sec 76800 MB/sec
Texel Rate 43200 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 13600 Mpixels/sec
Unified Shaders 128 800(160x5)
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 1040 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GTX

Amazon.com

Check prices at:

Radeon HD 5770

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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