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GeForce GTX 965M vs Radeon HD 4830 1GB

Intro

The GeForce GTX 965M makes use of a 28 nm design. nVidia has set the core frequency at 944 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this model. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 4830 1GB, which has GPU core speed of 575 MHz, and 1024 MB of GDDR4 RAM set to run at 900 MHz through a 256-bit bus. It also is comprised of 640(128x5) SPUs, 32 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M 60 Watts
Radeon HD 4830 1GB 95 Watts
Difference: 35 Watts (58%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 965M should in theory be a small bit better than the Radeon HD 4830 1GB overall. (explain)

GeForce GTX 965M 64000 MB/sec
Radeon HD 4830 1GB 57600 MB/sec
Difference: 6400 (11%)

Texel Rate

The GeForce GTX 965M should be much (more or less 228%) faster with regards to anisotropic filtering than the Radeon HD 4830 1GB. (explain)

GeForce GTX 965M 60416 Mtexels/sec
Radeon HD 4830 1GB 18400 Mtexels/sec
Difference: 42016 (228%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 965M is superior to the Radeon HD 4830 1GB, and very much so. (explain)

GeForce GTX 965M 30208 Mpixels/sec
Radeon HD 4830 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year January 5 2015 Oct 21, 2008
Code Name GM204 RV770 LE
Memory 2048 MB 1024 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 GDDR4
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 max amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video 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 number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 965M

Amazon.com

Check prices at:

Radeon HD 4830 1GB

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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