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GeForce GTX 650 vs Radeon HD 7770


Intro

The GeForce GTX 650 features a GPU clock speed of 1058 MHz, and the 1024 MB of GDDR5 RAM runs at 1250 MHz through a 128-bit bus. It also features 384 Stream Processors, 32 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 7770, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7770 3180 points
GeForce GTX 650 2270 points
Difference: 910 (40%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
Radeon HD 7770 80 Watts
Difference: 16 Watts (25%)

Memory Bandwidth

In theory, the GeForce GTX 650 should be 11% quicker than the Radeon HD 7770 overall, because of its higher data rate. (explain)

GeForce GTX 650 80000 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 8000 (11%)

Texel Rate

The Radeon HD 7770 will be a small bit (more or less 18%) better at AF than the GeForce GTX 650. (explain)

Radeon HD 7770 40000 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 6144 (18%)

Pixel Rate

The GeForce GTX 650 is a small bit (approximately 6%) more effective at FSAA than the Radeon HD 7770, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon HD 7770 16000 Mpixels/sec
Difference: 928 (6%)

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 650

Amazon.com

Radeon HD 7770

Amazon.com

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 650 Radeon HD 7770
Manufacturer nVidia AMD
Year September 2012 February 2012
Code Name GK107 Cape Verde XT
Memory 1024 MB 1024 MB
Core Speed 1058 MHz 1000 MHz
Memory Speed 5000 MHz 4500 MHz
Power (Max TDP) 64 watts 80 watts
Bandwidth 80000 MB/sec 72000 MB/sec
Texel Rate 33856 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 384 640
Texture Mapping Units 32 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1300 million 1500 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, 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 maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate 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 rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 650

Amazon.com

Radeon HD 7770

Amazon.com

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.

Comments

20 Responses to “GeForce GTX 650 vs Radeon HD 7770”
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Dane says:

GTX 650 > HD7770 for sure!

Fruitty Koksukir says:

I love this card, but I love kok in my azzwhole alot more! Call me!

Looking to buy a new Graphics Card! Need advice~ says:

[...] 2005 Posts 73 anyone know how 7770 compares with GTX 650 in real world performance? GeForce GTX 650 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare I want to go for one of these..pls [...]

Inquiry - which entry level gaming GPU is a good buy says:

[...] good buy GTx650 will ran better than HD7770 according sa review and consumes less power too. GeForce GTX 650 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare Reply With Quote « Previous Thread | Next Thread [...]

bill says:

GTX 650 2GB > RHD7770 1 GB
GTX 650 1GB < RHD7770 1 GB

Sapphire HD 7770 or Gigabyte HD 7770 - Page 5 says:

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Anonymous says:

AMD Radeon HD 7770 1GB GDDR5 is better than NVIDIA GeForce GTX 650 1GB GDDR5, but AMD Radeon HD 7770 1GB GDDR5 is a little bit slower than NVIDIA GeForce GTX 650 Ti 1GB GDDR5.

Emma Müller says:

MIERDA!!! cambie mi GTX 650 por un HD 7770 y me parece que andan igualadas, en unas horas comprare una GTX 560, esa si que es de las buenas

Trifke says:

Dane is right. GTX 650 > HD 7770

Gusta_Cz says:

No. HD 7770 is better. Search google!

Trifke says:

Yeah but up there writes that the GTX 650 is better than HD 7770 and I belive in that what I saw !!!

Anonymous says:

GTX 650 is a slightly faster card than the HD 7770 but the 7770 is makes it up in graphics. I would say that the HD 7770 is slightly better than the GTX 650 because graphics and performance is more important.

Noorba says:

I think these comparsion methods are useless. The pixel and texture fill rate with memory bandwidth information will never show the real performance of the GPU architecture. If there were theoretical computing performance (GFLOPS) in the comparsion, then that also wouldn't be enough to see the truth. Only real game tests are usefull so You'd rather check test at Techpowerup for example. Radeon HD7770 is faster by 15-20% than GTX650....it's a fact!

tarun says:

gtx 650 is better than hd 7770

john says:

isf we overclocked GTX 650 it 10 faster than hd7770 😀

GAME says:

yes GTX 650 faster than HD7770

deep says:

I will agree with most of them here and my research that gtx 650 is faster and consumes less power than amd hd7770

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