GeForce 9400 GT 256MB vs Radeon HD 6450 (OEM) 1GB

Intro

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which makes use of a 40 nm design. AMD has set the core speed at 750 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this specific model. It features 160 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
GeForce 9400 GT 256MB		50 Watts
	Difference: 19 Watts (61%)

Memory Bandwidth

The Radeon HD 6450 (OEM) 1GB should theoretically be a lot faster than the GeForce 9400 GT 256MB overall. (explain)

Radeon HD 6450 (OEM) 1GB		28800 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 16000 (125%)

Texel Rate

The Radeon HD 6450 (OEM) 1GB will be a lot (approximately 36%) better at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 1600 (36%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6450 (OEM) 1GB is superior to the GeForce 9400 GT 256MB, by far. (explain)

Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 800 (36%)

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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends 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.