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Radeon HD 4890 1GB vs Radeon HD 5830

Intro

The Radeon HD 4890 1GB features a GPU clock speed of 1000 MHz, and the 1024 MB of GDDR5 RAM is set to run at 975 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon HD 5830, which comes with a core clock speed of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It is made up of 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830 175 Watts
Radeon HD 4890 1GB 190 Watts
Difference: 15 Watts (9%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should perform just a bit faster than the Radeon HD 4890 1GB overall. (explain)

Radeon HD 5830 128000 MB/sec
Radeon HD 4890 1GB 124800 MB/sec
Difference: 3200 (3%)

Texel Rate

The Radeon HD 5830 should be a bit (more or less 12%) better at AF than the Radeon HD 4890 1GB. (explain)

Radeon HD 5830 44800 Mtexels/sec
Radeon HD 4890 1GB 40000 Mtexels/sec
Difference: 4800 (12%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4890 1GB is the winner, by far. (explain)

Radeon HD 4890 1GB 16000 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 3200 (25%)

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 4890 1GB

Amazon.com

Check prices at:

Radeon HD 5830

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 4890 1GB Radeon HD 5830
Manufacturer AMD AMD
Year Apr 2, 2009 February 25, 2010
Code Name RV790 XT Cypress LE
Memory 1024 MB 1024 MB
Core Speed 1000 MHz 800 MHz
Memory Speed 3900 MHz 4000 MHz
Power (Max TDP) 190 watts 175 watts
Bandwidth 124800 MB/sec 128000 MB/sec
Texel Rate 40000 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 800(160x5) 1120(224x5)
Texture Mapping Units 40 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 959 million 2154 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 (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it should 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 can be applied per second. This number is calculated by multiplying the total texture units of the card by the core clock 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 4890 1GB

Amazon.com

Check prices at:

Radeon HD 5830

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 4890 1GB vs Radeon HD 5830”
For Sale : Graphic Card XFX Radeon 4890 1GB DDR5 - Page 2 says:

[...] comparable to 5830 Radeon HD 4890 1GB vs Radeon HD 5830 – Performance Comparison Benchmarks @ Hardware Compare conclusion When combining all game benchmark scores on this page together, the Radeon HD 4890 1GB [...]

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