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GeForce GTX 1650 vs Radeon HD 4650 1GB

Intro

The GeForce GTX 1650 makes use of a 12 nm design. nVidia has clocked the core speed at 1485 MHz. The GDDR5 RAM is set to run at a speed of 8000 MHz on this model. It features 896 SPUs as well as 56 TAUs and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 4650 1GB, which has a core clock speed of 600 MHz and a GDDR3 memory speed of 700 MHz. It also makes use of a 128-bit memory bus, and makes use of a 55 nm design. It is made up of 320(64x5) SPUs, 32 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GTX 1650		75 Watts
	Difference: 20 Watts (36%)

Memory Bandwidth

The GeForce GTX 1650 should theoretically be much faster than the Radeon HD 4650 1GB overall. (explain)

GeForce GTX 1650		131072 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 108672 (485%)

Texel Rate

The GeForce GTX 1650 is much (approximately 333%) more effective at texture filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 1650		83160 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 63960 (333%)

Pixel Rate

The GeForce GTX 1650 is quite a bit (more or less 890%) better at AA than the Radeon HD 4650 1GB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 1650		47520 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 42720 (890%)

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 1650

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Radeon HD 4650 1GB

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Specifications

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Model	GeForce GTX 1650	Radeon HD 4650 1GB
Manufacturer	nVidia	AMD
Year	April 2019	Sep 10, 2008
Code Name	TU117-300-A1	RV730 PRO
Memory	4096 MB	1024 MB
Core Speed	1485 MHz	600 MHz
Memory Speed	32000 MHz	1400 MHz
Power (Max TDP)	75 watts	55 watts
Bandwidth	131072 MB/sec	22400 MB/sec
Texel Rate	83160 Mtexels/sec	19200 Mtexels/sec
Pixel Rate	47520 Mpixels/sec	4800 Mpixels/sec
Unified Shaders	896	320(64x5)
Texture Mapping Units	56	32
Render Output Units	32	8
Bus Type	GDDR5	GDDR3
Bus Width	128-bit	128-bit
Fab Process	12 nm	55 nm
Transistors	4700 million	514 million
Bus	PCIe 3.0 x16	PCIe 2.0 x16, AGP 8x
DirectX Version	DirectX 12.0	DirectX 10.1
OpenGL Version	OpenGL 4.6	OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

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