GeForce 9500 GT DDR2 vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which features core clock speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 RAM. It features 2304 SPUs along with 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 DDR2		50 Watts
Geforce GTX 780		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

The Geforce GTX 780 should theoretically perform a lot faster than the GeForce 9500 GT DDR2 overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 9500 GT DDR2		16000 MB/sec
	Difference: 272384 (1702%)

Texel Rate

The Geforce GTX 780 should be much (approximately 1783%) faster with regards to AF than the GeForce 9500 GT DDR2. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 9500 GT DDR2		8800 Mtexels/sec
	Difference: 156896 (1783%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 780 is the winner, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 9500 GT DDR2		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 information (in units of 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 clock speed. If the card has DDR RAM, it 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units by the core 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.