GeForce 9500 GT 512MB GDDR3 vs Geforce GTX 780

Intro

Compare all of that to the Geforce GTX 780, which has core clock speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 RAM. It features 2304 SPUs as well as 192 Texture Address Units and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3		50 Watts
Geforce GTX 780		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 should be much faster than the GeForce 9500 GT 512MB GDDR3 overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 9500 GT 512MB GDDR3		25600 MB/sec
	Difference: 262784 (1027%)

Texel Rate

The Geforce GTX 780 will be quite a bit (approximately 1783%) better at texture filtering than the GeForce 9500 GT 512MB GDDR3. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 9500 GT 512MB GDDR3		8800 Mtexels/sec
	Difference: 156896 (1783%)

Pixel Rate

The Geforce GTX 780 will be quite a bit (about 841%) more effective at anti-aliasing than the GeForce 9500 GT 512MB GDDR3, and also able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 9500 GT 512MB GDDR3		4400 Mpixels/sec
	Difference: 37024 (841%)

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 largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range 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 amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics 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 colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.