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GeForce 9800 GT 1GB vs GeForce GT 340 1GB

Intro

The GeForce 9800 GT 1GB uses a 65/55 nm design. nVidia has set the core frequency at 600 MHz. The GDDR3 memory works at a speed of 900 MHz on this specific card. It features 112 SPUs as well as 56 TAUs and 16 ROPs.

Compare that to the GeForce GT 340 1GB, which makes use of a 40 nm design. nVidia has set the core speed at 550 MHz. The GDDR5 RAM runs at a speed of 850 MHz on this specific card. It features 96 SPUs along with 32 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
GeForce 9800 GT 1GB 105 Watts
Difference: 36 Watts (52%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GT 1GB will be 6% faster than the GeForce GT 340 1GB overall, due to its higher bandwidth. (explain)

GeForce 9800 GT 1GB 57600 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 3200 (6%)

Texel Rate

The GeForce 9800 GT 1GB will be a lot (approximately 91%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 16000 (91%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 9800 GT 1GB is the winner, by far. (explain)

GeForce 9800 GT 1GB 9600 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 5200 (118%)

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

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GeForce GT 340 1GB

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 GT 1GB GeForce GT 340 1GB
Manufacturer nVidia nVidia
Year July 2008 February 2010
Code Name G92a/b GT215
Memory 1024 MB 1024 MB
Core Speed 600 MHz 550 MHz
Memory Speed 1800 MHz 3400 MHz
Power (Max TDP) 105 watts 69 watts
Bandwidth 57600 MB/sec 54400 MB/sec
Texel Rate 33600 Mtexels/sec 17600 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 112 96
Texture Mapping Units 56 32
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 727 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 the video 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 number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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 get to the max fill rate.

Display Prices

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GeForce 9800 GT 1GB

Amazon.com

Check prices at:

GeForce GT 340 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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