Radeon HD 4850 512MB vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which features a core clock speed of 730 MHz and a DDR3 memory speed of 900 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 4850 512MB		110 Watts
	Difference: 80 Watts (267%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4850 512MB should theoretically be quite a bit superior to the Radeon R7 240 in general. (explain)

Radeon HD 4850 512MB		63552 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 34752 (121%)

Texel Rate

The Radeon HD 4850 512MB will be quite a bit (about 71%) better at anisotropic filtering than the Radeon R7 240. (explain)

Radeon HD 4850 512MB		25000 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 10400 (71%)

Pixel Rate

The Radeon HD 4850 512MB will be quite a bit (approximately 71%) better at FSAA than the Radeon R7 240, and should be capable of handling higher resolutions better. (explain)

Radeon HD 4850 512MB		10000 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 4160 (71%)

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 over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.