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GeForce GTX 965M vs Radeon HD 4830 512MB

Intro

The GeForce GTX 965M features a GPU core speed of 944 MHz, and the 2048 MB of GDDR5 memory runs at 1000 MHz through a 128-bit bus. It also is made up of 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 4830 512MB, which features a clock speed of 575 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M 60 Watts
Radeon HD 4830 512MB 95 Watts
Difference: 35 Watts (58%)

Memory Bandwidth

The GeForce GTX 965M, in theory, should be a little bit faster than the Radeon HD 4830 512MB in general. (explain)

GeForce GTX 965M 64000 MB/sec
Radeon HD 4830 512MB 57600 MB/sec
Difference: 6400 (11%)

Texel Rate

The GeForce GTX 965M should be a lot (approximately 228%) more effective at anisotropic filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 965M 60416 Mtexels/sec
Radeon HD 4830 512MB 18400 Mtexels/sec
Difference: 42016 (228%)

Pixel Rate

The GeForce GTX 965M will be quite a bit (more or less 228%) better at AA than the Radeon HD 4830 512MB, and also should be capable of handling higher resolutions better. (explain)

GeForce GTX 965M 30208 Mpixels/sec
Radeon HD 4830 512MB 9200 Mpixels/sec
Difference: 21008 (228%)

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 965M

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 965M Radeon HD 4830 512MB
Manufacturer nVidia AMD
Year January 5 2015 Oct 21, 2008
Code Name GM204 RV770 LE
Memory 2048 MB 512 MB
Core Speed 944 MHz 575 MHz
Memory Speed 4000 MHz 1800 MHz
Power (Max TDP) 60 watts 95 watts
Bandwidth 64000 MB/sec 57600 MB/sec
Texel Rate 60416 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 30208 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 1024 640(128x5)
Texture Mapping Units 64 32
Render Output Units 32 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 956 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card 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 in one second.

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

Display Prices

Hide Prices

GeForce GTX 965M

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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