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HD 6620g + HD 6750M Dual Graphics question

post #1 of 4
Thread Starter 
Ok, first off all I have no idea if this is the correct place to put this, if its not I apologize.

My friend game me an HP Dv6-6135dx laptop with the following specs:

AMD A8-3500M
HD 6620g + HD 6750M 1GB GDDR5
640GB
6GB 1333

Now, is there a way to fully disable the integrated graphics and only use the HD 6750M as primary? One way I found out is to flash the bios with a modded one, but I'm looking for a safer alternative, does anyone know? So far I've tested this laptop against my other laptop running the A10 with HD 7660g graphics, and the HP is already proving superior on games running at 1.5Ghz all stock settings no OC and running in crossfire.(Ill later overclock the cpu and the HD6620g to see what performance i get)

Lastly after research, and research I found out this laptop is equipped with an HD 6750M 1GB GDDR5 graphics adapter, I'm having issues with GPU-Z it displays it as "GDDR3"? My friend has the exact same laptop he sent his GPU-Z information, and on his it does show GDDR5 with a Bus Width of 128 and bandwidth of 50.8GB/s ?

According to here:
http://www.techpowerup.com/gpudb/324/ATI_Mobile_Radeon_HD_6750M.html
And Here:
http://www.techpowerup.com/gpuz/9da9f/

MINE:



^headscratch.gif does anyone know what's going on?
Edited by JP2012 - 2/8/13 at 10:15am
post #2 of 4
Well, the Radeon 6750 is produced with both GDDR3 and GDDR5 memory. This leads me to believe that you have the GDDR3 version. However, since you stated that your friend had it displayed as GDDR5, I think that GPU-Z might be reading the 6620g, which is 1GB GDDR3. If you are seeing a good performance increase then there is no real need to worry about this. Your laptop uses both cards in tandem to create visuals. My best guess would be GPU-Z's fault. It might be getting confused with the dual cards.
Jetstream
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CPUGraphicsRAMHard Drive
Intel i7 3930m nvidia gt650m 8gb ddr3 1600mhz 160gb intel ssd 
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Jetstream
(21 items)
 
Sager 6165
(8 items)
 
 
CPUGraphicsRAMHard Drive
Intel i7 3930m nvidia gt650m 8gb ddr3 1600mhz 160gb intel ssd 
Hard DriveOptical DriveOSMonitor
toshiba 500gb 7200rpm cd/dvd rw w7 64 1080p matte 95% color gamut 
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post #3 of 4
Thread Starter 
Quote:
the Radeon 6750 is produced with both GDDR3 and GDDR5 memory

Mmm was afraid of that since HP will allow to customize a laptop before purchase... probably my friend selected the slower GDDR3 version... but thanks anyways for a reply after messing around with the laptop I've figured out how to enable/disable each graphics cards separately.
post #4 of 4
Thread Starter 
ACTUALLY, today I took apart my laptop to add new thermal paste, and decided to look at the memory:

H5GQ1H24AFR


And it turns out it is in fact 1GB GDDR5
http://www.hynix.com/datasheet/eng/graphics/details/graphics_26_H5GQ1H24AFR.jsp?searchType=2&menuNo=1&m=3&s=3&RK=26&RAM_NAME=

http://www.alldatasheet.com/datasheet-pdf/pdf/333512/HYNIX/H5GQ1H24AFR-T2C.html

Does any one know if there's a good program that gives a better GPU reading? I tried HWiNFO64 but it gives the same reading "GDDR3" could this be because its reading the HD 6620g memory? I'm also wondering why my bandwidth is low?
Edited by JP2012 - 2/14/13 at 12:40am
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