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GeForce GTX 965M vs Radeon HD 4850 2GB

Intro

The GeForce GTX 965M features core clock speeds of 944 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon HD 4850 2GB, which makes use of a 55 nm design. AMD has set the core speed at 625 MHz. The GDDR4 memory works at a frequency of 993 MHz on this model. It features 800(160x5) SPUs along with 40 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 4850 2GB 110 Watts
Difference: 50 Watts (83%)

Memory Bandwidth

Performance-wise, the GeForce GTX 965M should theoretically be a bit better than the Radeon HD 4850 2GB in general. (explain)

GeForce GTX 965M 64000 MB/sec
Radeon HD 4850 2GB 63552 MB/sec
Difference: 448 (1%)

Texel Rate

The GeForce GTX 965M will be quite a bit (approximately 142%) faster with regards to texture filtering than the Radeon HD 4850 2GB. (explain)

GeForce GTX 965M 60416 Mtexels/sec
Radeon HD 4850 2GB 25000 Mtexels/sec
Difference: 35416 (142%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 965M is superior to the Radeon HD 4850 2GB, by a large margin. (explain)

GeForce GTX 965M 30208 Mpixels/sec
Radeon HD 4850 2GB 10000 Mpixels/sec
Difference: 20208 (202%)

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 4850 2GB

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 4850 2GB
Manufacturer nVidia AMD
Year January 5 2015 Jun 25, 2008
Code Name GM204 RV770 PRO
Memory 2048 MB 2048 MB
Core Speed 944 MHz 625 MHz
Memory Speed 4000 MHz 1986 MHz
Power (Max TDP) 60 watts 110 watts
Bandwidth 64000 MB/sec 63552 MB/sec
Texel Rate 60416 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 30208 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 1024 800(160x5)
Texture Mapping Units 64 40
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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends 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

GeForce GTX 965M

Amazon.com

Check prices at:

Radeon HD 4850 2GB

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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