HD 8750M + HD 8650G VS GT 740M for school and gaming

Sarutobi0997

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I was looking at the HP ENVY 15t/z-j000 and I configured one with A10-5750M and HD 8750M 1GB Crossfire HD 8650G and the other with Intel i5-3230M and GT 740M 2GB. Their prices are the same so thats not a problem but im wondering which is better for modern gaming (med+ 720p 30fps). Also Ive been hearing that both of those computers' discrete graphics only have a 64 bit memory bus, is that true?
 

Maxime506

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I suggest not. U'll find a hard time to watching a 15" screen in such high resolution. Besides, GT 740M is too weak to run games in med/high settings in 1080p

If u pursue 1080p I suggest buying a decent 21-24" LCD monitor to build a second display.


Do u have friends working for HP who indicates u that this HP laptop's 740M is subdued to 64bit memory instead of 128bit?
 

Maxime506

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8650G and 8750M are built on different architecture, so there is no way that these two gfx will crossfire or forming Dual Graphics, it'll subdued to Switchable Graphics like the Intel's HD 4000 and GT 740M therefore AMD's only advantage is disappear

Here is GT 740M's specs: http://www.notebookcheck.net/NVIDIA-GeForce-GT-740M.89900.0.html

HD 8750M's: http://www.notebookcheck.net/NVIDIA-GeForce-GT-740M.89900.0.html

If AMD's Dual Graphics is not enabled, The only HD 8750M, if it's DDR3 version, is even below GT 640M, and the DDR5 version will do a bit better than GT 640M but will only on par w/ GT 740M DDR3. (But if Dual Graphics can be enabled it'll do slightly below GTX 760M but better than GT 750M) However, if u purchase A10's laptop u'll waste on a very good IGP (8650G) which is on par with HD 6730M DDR3 version.

Besides, Although A10 has quad-core, but Intel's i5 has better efficiency and a dual-core but 4-thread i5-3210M beats A10-5750M in CPU performance (of course i5's IGP is still far away from HD 8650G) Here is the chart: http://community.futuremark.com/hardware/cpu (A10-5750M's score is 500 less than i5-3210m.)


P.S: Both HD 8750M and GT 740M has 128-bit memory bandwidth.

The exempt of Lenovo.com indicates that :

•AMD Radeon HD 8650G + 8570M Dual Graphics
• AMD Radeon HD 8550G + 8570M Dual Graphics
•AMD Radeon HD 8450G + 8570M Dual Graphics

But HD 8570M has only 64-bit memory bandwidth, so the "Dual Graphics" result is even worse than HD 7660G + HD 7670M though HD 8650G is 15% better than HD 7660G
 

Sarutobi0997

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thanks for the reply. i would think that it has crossfire since it says it does but one thing i think is more important is the memory bus on the GT 740m. i know the default memory bus for the GT 740m is 128 but ive heard that specifically on the 15t-j000 it was "manually" manufactured with 64 bit bus. also do you think its a good idea to get the 1080p screen for only a 50USD increase?
 

Maxime506

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I suggest not. U'll find a hard time to watching a 15" screen in such high resolution. Besides, GT 740M is too weak to run games in med/high settings in 1080p

If u pursue 1080p I suggest buying a decent 21-24" LCD monitor to build a second display.


Do u have friends working for HP who indicates u that this HP laptop's 740M is subdued to 64bit memory instead of 128bit?
 
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