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Radeon HD 4830 1GB vs Radeon R9 390 8G

Intro

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

Compare those specs to the Radeon R9 390 8G, which comes with a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 512-bit memory bus, and makes use of a 28 nm design. It features 2560 SPUs, 160 TAUs, and 64 Raster Operation Units.

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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

Theoretically speaking, the Radeon R9 390 8G will be 567% faster than the Radeon HD 4830 1GB in general, because of its greater bandwidth. (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 quite a bit (approximately 770%) more effective at anisotropic 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 will be quite a bit (approximately 596%) better at anti-aliasing than the Radeon HD 4830 1GB, and should be able to handle higher resolutions better. (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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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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.

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