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Radeon HD 4850 512MB vs Radeon HD 5750 1GB

Intro

The Radeon HD 4850 512MB features a clock frequency of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon HD 5750 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 memory is set to run at a frequency of 1150 MHz on this particular card. It features 720(144x5) SPUs along with 36 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB 86 Watts
Radeon HD 4850 512MB 110 Watts
Difference: 24 Watts (28%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB should be a bit faster than the Radeon HD 4850 512MB overall. (explain)

Radeon HD 5750 1GB 73600 MB/sec
Radeon HD 4850 512MB 63552 MB/sec
Difference: 10048 (16%)

Texel Rate

The Radeon HD 5750 1GB is a bit (approximately 1%) faster with regards to anisotropic filtering than the Radeon HD 4850 512MB. (explain)

Radeon HD 5750 1GB 25200 Mtexels/sec
Radeon HD 4850 512MB 25000 Mtexels/sec
Difference: 200 (1%)

Pixel Rate

The Radeon HD 5750 1GB should be a bit (more or less 12%) better at AA than the Radeon HD 4850 512MB, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 5750 1GB 11200 Mpixels/sec
Radeon HD 4850 512MB 10000 Mpixels/sec
Difference: 1200 (12%)

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

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Radeon HD 4850 512MB

Amazon.com

Check prices at:

Radeon HD 5750 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 4850 512MB Radeon HD 5750 1GB
Manufacturer AMD AMD
Year Jun 25, 2008 October 13, 2009
Code Name RV770 PRO Juniper LE
Memory 512 MB 1024 MB
Core Speed 625 MHz 700 MHz
Memory Speed 1986 MHz 4600 MHz
Power (Max TDP) 110 watts 86 watts
Bandwidth 63552 MB/sec 73600 MB/sec
Texel Rate 25000 Mtexels/sec 25200 Mtexels/sec
Pixel Rate 10000 Mpixels/sec 11200 Mpixels/sec
Unified Shaders 800(160x5) 720(144x5)
Texture Mapping Units 40 36
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 956 million 1040 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 4850 512MB

Amazon.com

Check prices at:

Radeon HD 5750 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Comments

One Response to “Radeon HD 4850 512MB vs Radeon HD 5750 1GB”
Radeonhd hd4850 | Fotofill says:

[...] Radeon HD 4850 512MB vs Radeon HD 5750 1GB – Performance …Radeon HD 5750 1GB wins. (Based entirely on the benchmarks listed above). When combining all game benchmark scores on this page together, the Radeon … [...]

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