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GeForce 830M vs Radeon HD 4650 512MB

Intro

The GeForce 830M features core clock speeds of 1029 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 memory. It features 256 SPUs as well as 16 TAUs and 8 Rasterization Operator Units.

Compare all that to the Radeon HD 4650 512MB, which features GPU core speed of 600 MHz, and 512 MB of DDR2 memory set to run at 500 MHz through a 128-bit bus. It also features 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M 25 Watts
Radeon HD 4650 512MB 55 Watts
Difference: 30 Watts (120%)

Memory Bandwidth

Performance-wise, the Radeon HD 4650 512MB should in theory be a bit superior to the GeForce 830M overall. (explain)

Radeon HD 4650 512MB 16000 MB/sec
GeForce 830M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The Radeon HD 4650 512MB will be a small bit (approximately 17%) faster with regards to texture filtering than the GeForce 830M. (explain)

Radeon HD 4650 512MB 19200 Mtexels/sec
GeForce 830M 16464 Mtexels/sec
Difference: 2736 (17%)

Pixel Rate

The GeForce 830M is a lot (approximately 72%) faster with regards to full screen anti-aliasing than the Radeon HD 4650 512MB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 830M 8232 Mpixels/sec
Radeon HD 4650 512MB 4800 Mpixels/sec
Difference: 3432 (72%)

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 830M

Amazon.com

Check prices at:

Radeon HD 4650 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 830M Radeon HD 4650 512MB
Manufacturer nVidia AMD
Year March 12 2014 Sep 10, 2008
Code Name GM108 RV730 PRO
Memory 2048 MB 512 MB
Core Speed 1029 MHz 600 MHz
Memory Speed 1800 MHz 1000 MHz
Power (Max TDP) 25 watts 55 watts
Bandwidth 14400 MB/sec 16000 MB/sec
Texel Rate 16464 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 256 320(64x5)
Texture Mapping Units 16 32
Render Output Units 8 8
Bus Type DDR3 DDR2
Bus Width 64-bit 128-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 514 million
Bus PCIe 3.0 x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 830M

Amazon.com

Check prices at:

Radeon HD 4650 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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