GeForce 9800 GT 1GB vs GeForce GTX 470

Intro

Compare all of that to the GeForce GTX 470, which has a clock frequency of 607 MHz and a GDDR5 memory speed of 837 MHz. It also uses a 320-bit bus, and uses a 40 nm design. It features 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB		105 Watts
GeForce GTX 470		215 Watts
	Difference: 110 Watts (105%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should theoretically be much better than the GeForce 9800 GT 1GB in general. (explain)

GeForce GTX 470		133920 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 76320 (133%)

Texel Rate

The GeForce GTX 470 will be a bit (approximately 1%) faster with regards to anisotropic filtering than the GeForce 9800 GT 1GB. (explain)

GeForce GTX 470		33992 Mtexels/sec
GeForce 9800 GT 1GB		33600 Mtexels/sec
	Difference: 392 (1%)

Pixel Rate

The GeForce GTX 470 is a lot (approximately 153%) more effective at anti-aliasing than the GeForce 9800 GT 1GB, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 14680 (153%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at 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 chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.