GeForce 9500 GT 512MB GDDR3 vs Radeon HD 5450

Intro

Compare that to the Radeon HD 5450, which has core speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 RAM. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce 9500 GT 512MB GDDR3		50 Watts
	Difference: 31 Watts (163%)

Memory Bandwidth

In theory, the GeForce 9500 GT 512MB GDDR3 should perform much faster than the Radeon HD 5450 overall. (explain)

GeForce 9500 GT 512MB GDDR3		25600 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 12800 (100%)

Texel Rate

The GeForce 9500 GT 512MB GDDR3 is a lot (more or less 69%) faster with regards to AF than the Radeon HD 5450. (explain)

GeForce 9500 GT 512MB GDDR3		8800 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 3600 (69%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 9500 GT 512MB GDDR3 is the winner, by a large margin. (explain)

GeForce 9500 GT 512MB GDDR3		4400 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 1800 (69%)

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 maximum amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it must 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.