GeForce 9500 GT DDR2 vs GeForce GTX 465

Intro

Compare those specs to the GeForce GTX 465, which features GPU clock speed of 607 MHz, and 1024 MB of GDDR5 RAM running at 802 MHz through a 256-bit bus. It also is comprised of 352 SPUs, 44 TAUs, and 32 ROPs.

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

As far as performance goes, the GeForce GTX 465 should in theory be much better than the GeForce 9500 GT DDR2 overall. (explain)

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

Texel Rate

The GeForce GTX 465 will be a lot (approximately 204%) better 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 should be quite a bit (more or less 341%) better at anti-aliasing than the GeForce 9500 GT DDR2, and also should be able to handle higher screen resolutions without losing too much performance. (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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.