GeForce GT 240 GDDR5 vs Radeon HD 4670 512MB

Intro

Compare those specifications to the Radeon HD 4670 512MB, which features core speeds of 750 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 ROPs.

Battlefield Bad Company 2

Settings:	High Quality
AA:	4x
AF:	8x
Resolution:	1920x1200
Test Machine:	Tom's Hardware Test Machine (Source)

GeForce GT 240 GDDR5		18 FPS
Radeon HD 4670 512MB		13 FPS
	Difference: 5 FPS (38%)

Left4Dead 2

Settings:	Very High
AA:	8x
AF:	16x
Resolution:	1920x1200
Test Machine:	Tom's Hardware Test Machine (Source)

Radeon HD 4670 512MB		39 FPS
GeForce GT 240 GDDR5		27 FPS
	Difference: 12 FPS (44%)

Mass Effect 2

Settings:	Maximum Quality
AA:	none
AF:	8x
Resolution:	1920x1200
Test Machine:	Tom's Hardware Test Machine (Source)

GeForce GT 240 GDDR5		43 FPS
Radeon HD 4670 512MB		42 FPS
	Difference: 1 FPS (2%)

Supreme Commander 2

Settings:	High
AA:	8x
AF:	16x
Resolution:	1920x1200
Test Machine:	Tom's Hardware Test Machine (Source)

Radeon HD 4670 512MB		29 FPS
GeForce GT 240 GDDR5		26 FPS
	Difference: 3 FPS (12%)

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Radeon HD 4670 512MB wins

(Based entirely on the benchmarks listed above)

When combining all game benchmark scores on this page together, the Radeon HD 4670 512MB wins overall, by 9 FPS. Please note that we do not have the results of every benchmark ever done for these cards, so the results may differ wildly in different games.

Radeon HD 4670 512MB		123 FPS
GeForce GT 240 GDDR5		114 FPS
	Difference: 9 FPS (8%)

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

As far as performance goes, the GeForce GT 240 GDDR5 should theoretically be much superior to the Radeon HD 4670 512MB in general. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 22400 (70%)

Texel Rate

The Radeon HD 4670 512MB should be much (about 36%) faster with regards to texture filtering than the GeForce GT 240 GDDR5. (explain)

Radeon HD 4670 512MB		24000 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 6400 (36%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 4670 512MB is a better choice, by a large margin. (explain)

Radeon HD 4670 512MB		6000 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 1600 (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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.