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GeForce 9800 GX2 vs Geforce GTX 770

Intro

The GeForce 9800 GX2 comes with a GPU clock speed of 600 MHz, and the 512 MB of GDDR3 RAM is set to run at 1000 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

Compare those specs to the Geforce GTX 770, which features core speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GX2 197 Watts
Geforce GTX 770 230 Watts
Difference: 33 Watts (17%)

Memory Bandwidth

Performance-wise, the Geforce GTX 770 should in theory be much better than the GeForce 9800 GX2 in general. (explain)

Geforce GTX 770 224384 MB/sec
GeForce 9800 GX2 128000 MB/sec
Difference: 96384 (75%)

Texel Rate

The Geforce GTX 770 is a lot (approximately 74%) faster with regards to texture filtering than the GeForce 9800 GX2. (explain)

Geforce GTX 770 133888 Mtexels/sec
GeForce 9800 GX2 76800 Mtexels/sec
Difference: 57088 (74%)

Pixel Rate

The Geforce GTX 770 is a lot (more or less 74%) better at full screen anti-aliasing than the GeForce 9800 GX2, and also should be able to handle higher screen resolutions more effectively. (explain)

Geforce GTX 770 33472 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 14272 (74%)

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

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GeForce 9800 GX2

Amazon.com

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Geforce GTX 770

Amazon.com

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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 GX2 Geforce GTX 770
Manufacturer nVidia nVidia
Year Mar 2008 May 2013
Code Name G92 GK104
Memory 512 MB (x2) 2048 MB
Core Speed 600 MHz (x2) 1046 MHz
Memory Speed 2000 MHz (x2) 7012 MHz
Power (Max TDP) 197 watts 230 watts
Bandwidth 128000 MB/sec 224384 MB/sec
Texel Rate 76800 Mtexels/sec 133888 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 33472 Mpixels/sec
Unified Shaders 128 (x2) 1536
Texture Mapping Units 64 (x2) 128
Render Output Units 16 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 65 nm 28 nm
Transistors 754 million 3540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce 9800 GX2

Amazon.com

Check prices at:

Geforce GTX 770

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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