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Radeon HD 4830 1GB vs Radeon R9 390 8G

Intro

The Radeon HD 4830 1GB has a clock frequency of 575 MHz and a GDDR4 memory frequency of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the Radeon R9 390 8G, which features a GPU core clock speed of 1000 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also is comprised of 2560 Stream Processors, 160 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB 95 Watts
Radeon R9 390 8G 275 Watts
Difference: 180 Watts (189%)

Memory Bandwidth

The Radeon R9 390 8G, in theory, should perform quite a bit faster than the Radeon HD 4830 1GB in general. (explain)

Radeon R9 390 8G 384000 MB/sec
Radeon HD 4830 1GB 57600 MB/sec
Difference: 326400 (567%)

Texel Rate

The Radeon R9 390 8G should be a lot (about 770%) better at texture filtering than the Radeon HD 4830 1GB. (explain)

Radeon R9 390 8G 160000 Mtexels/sec
Radeon HD 4830 1GB 18400 Mtexels/sec
Difference: 141600 (770%)

Pixel Rate

The Radeon R9 390 8G is quite a bit (more or less 596%) faster with regards to AA than the Radeon HD 4830 1GB, and able to handle higher screen resolutions more effectively. (explain)

Radeon R9 390 8G 64000 Mpixels/sec
Radeon HD 4830 1GB 9200 Mpixels/sec
Difference: 54800 (596%)

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 4830 1GB

Amazon.com

Check prices at:

Radeon R9 390 8G

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 4830 1GB Radeon R9 390 8G
Manufacturer AMD AMD
Year Oct 21, 2008 June 2015
Code Name RV770 LE Grenada PRO
Memory 1024 MB 8192 MB
Core Speed 575 MHz 1000 MHz
Memory Speed 1800 MHz 6000 MHz
Power (Max TDP) 95 watts 275 watts
Bandwidth 57600 MB/sec 384000 MB/sec
Texel Rate 18400 Mtexels/sec 160000 Mtexels/sec
Pixel Rate 9200 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 640(128x5) 2560
Texture Mapping Units 32 160
Render Output Units 16 64
Bus Type GDDR4 GDDR5
Bus Width 256-bit 512-bit
Fab Process 55 nm 28 nm
Transistors 956 million 6200 million
Bus PCIe 2.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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

Display Prices

Hide Prices

Radeon HD 4830 1GB

Amazon.com

Check prices at:

Radeon R9 390 8G

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.

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