Radeon HD 4670 1GB vs Radeon R7 M265

Intro

Compare those specs to the Radeon R7 M265, which has GPU core speed of 725 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 4670 1GB should be a small bit faster than the Radeon R7 M265 overall. (explain)

Radeon HD 4670 1GB		35200 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 3200 (10%)

Texel Rate

The Radeon HD 4670 1GB is quite a bit (more or less 38%) better at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon HD 4670 1GB		24000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 6600 (38%)

Pixel Rate

The Radeon HD 4670 1GB is a bit (approximately 3%) more effective at full screen anti-aliasing than the Radeon R7 M265, and will be capable of handling higher resolutions better. (explain)

Radeon HD 4670 1GB		6000 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 200 (3%)

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 maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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