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GeForce GTX 650 vs Radeon HD 7770

Intro

The GeForce GTX 650 makes use of a 28 nm design. nVidia has set the core speed at 1058 MHz. The GDDR5 memory works at a speed of 1250 MHz on this specific card. It features 384 SPUs as well as 32 TAUs and 16 ROPs.

Compare those specifications to the Radeon HD 7770, which comes with GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

(No game benchmarks for this combination yet.)

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

Performance-wise, the GeForce GTX 650 should in theory be a little bit better than the Radeon HD 7770 in general. (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 bit (about 18%) more effective at texture filtering than the GeForce GTX 650. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 is superior to the Radeon HD 7770, but not by far. (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

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

Model GeForce GTX 650 Radeon HD 7770
Manufacturer nVidia AMD
Year September 2012 February 2012
Code Name GK107 Cape Verde XT
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 2048 MB 1024 MB
Core Speed 1058 MHz 1000 MHz
Shader Speed 1058 MHz (N/A) MHz
Memory Speed 1250 MHz (5000 MHz effective) 1125 MHz (4500 MHz effective)
Unified Shaders 384 640
Texture Mapping Units 32 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2
Power (Max TDP) 64 watts 80 watts
Shader Model 5.0 5.0
Bandwidth 80000 MB/sec 72000 MB/sec
Texel Rate 33856 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 16000 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR 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 of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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

Comments

18 Responses to “GeForce GTX 650 vs Radeon HD 7770”
[...] Originally Posted by andreiaka GeForce GTX 650 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare Pe bune? Hardware compare ca punct de referinta? Sper ca stii ca site`ul asta compara doar ce`i [...]
[...] POWER CONSUMPTION gaming pc build pila na ang GTX 650 bro? cuz it a bit better than HD7770 GeForce GTX 650 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare and it will favor your BATMAN game because of its Physics and CUDA Reply With [...]
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!
[...] 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 [...]
[...] 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
[...] PC My Achievements Total Achievements: 2 no its not bro..check the benchmarks u will get to know GeForce GTX 650 vs Radeon HD 7770 – Performance Comparison Benchmarks @ Hardware Compare [...]
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
GAME says:
yes GTX 650 faster than HD7770

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