GeForce 9500 GT DDR2 vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which has a clock frequency of 607 MHz and a GDDR5 memory speed of 802 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It features 352 SPUs, 44 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2		50 Watts
GeForce GTX 465		200 Watts
	Difference: 150 Watts (300%)

Memory Bandwidth

In theory, the GeForce GTX 465 is 541% faster than the GeForce 9500 GT DDR2 overall, due to its greater bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce 9500 GT DDR2		16000 MB/sec
	Difference: 86592 (541%)

Texel Rate

The GeForce GTX 465 is quite a bit (about 204%) more effective at anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 17908 (204%)

Pixel Rate

The GeForce GTX 465 will be quite a bit (about 341%) faster with regards to full screen anti-aliasing than the GeForce 9500 GT DDR2, and also capable of handling higher resolutions better. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce 9500 GT DDR2		4400 Mpixels/sec
	Difference: 15024 (341%)

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 largest amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.