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GeForce GTX 650 Ti vs Radeon HD 4830 512MB

Intro

The GeForce GTX 650 Ti has core speeds of 928 MHz on the GPU, and 1350 MHz on the 1024 MB of GDDR5 memory. It features 768 SPUs as well as 64 Texture Address Units and 16 ROPs.

Compare that to the Radeon HD 4830 512MB, which makes use of a 55 nm design. AMD has clocked the core speed at 575 MHz. The GDDR3 RAM is set to run at a frequency of 900 MHz on this specific model. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB 95 Watts
GeForce GTX 650 Ti 110 Watts
Difference: 15 Watts (16%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti should be quite a bit faster than the Radeon HD 4830 512MB overall. (explain)

GeForce GTX 650 Ti 86400 MB/sec
Radeon HD 4830 512MB 57600 MB/sec
Difference: 28800 (50%)

Texel Rate

The GeForce GTX 650 Ti is a lot (about 223%) more effective at anisotropic filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 650 Ti 59392 Mtexels/sec
Radeon HD 4830 512MB 18400 Mtexels/sec
Difference: 40992 (223%)

Pixel Rate

The GeForce GTX 650 Ti will be quite a bit (about 61%) more effective at anti-aliasing than the Radeon HD 4830 512MB, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti 14848 Mpixels/sec
Radeon HD 4830 512MB 9200 Mpixels/sec
Difference: 5648 (61%)

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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GeForce GTX 650 Ti

Amazon.com

Check prices at:

Radeon HD 4830 512MB

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 GeForce GTX 650 Ti Radeon HD 4830 512MB
Manufacturer nVidia AMD
Year October 2012 Oct 21, 2008
Code Name GK106 RV770 LE
Memory 1024 MB 512 MB
Core Speed 928 MHz 575 MHz
Memory Speed 5400 MHz 1800 MHz
Power (Max TDP) 110 watts 95 watts
Bandwidth 86400 MB/sec 57600 MB/sec
Texel Rate 59392 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 768 640(128x5)
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors 2540 million 956 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 650 Ti

Amazon.com

Check prices at:

Radeon HD 4830 512MB

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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