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Radeon HD 4830 1GB vs Radeon R9 390 8G

Intro

The Radeon HD 4830 1GB comes with core clock speeds of 575 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR4 RAM. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 ROPs.

Compare all of that to the Radeon R9 390 8G, which comes with a clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 512-bit bus, and uses 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 should be 567% quicker than the Radeon HD 4830 1GB in general, due to its higher data rate. (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 will be much (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 should be a lot (about 596%) more effective at FSAA than the Radeon HD 4830 1GB, and will be capable of handling higher screen resolutions while still performing well. (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 maximum amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the 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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