05-19-2014, 12:06 AM
(This post was last modified: 05-19-2014, 12:10 AM by solarmystic.)
Number 1 culprit for this situation is usually the drivers.
Depending on the age and model of your graphics card, the OpenGL driver for XP could be superior as compared to the one provided by your vendor for Windows 7 and above. This is particularly the case if your system was built/produced prior to the release of Windows 7/Vista.
I think I've read somewhere that the overhead for OGL is higher in Vista/7/8 as compared to XP for the same graphics card, since it has to jump more hoops to do the same thing. Again, this is highly dependant on your graphics card and how old it is. E.g. If you're on a card like the Radeon X series (2004/2005), the XP drivers are definitely superior to ones that AMD/ATI provides for Vista/7/8.
Number 2 culprit would be the additional demands of Windows 7 as compared to Windows XP on your system. For example, Aero Glass actually saps GPU power away from the emulator, and if your card is weak enough, you will notice the difference.
In conclusion, if your system is particularly ancient, it's best to stick with XP for the emulator.
Depending on the age and model of your graphics card, the OpenGL driver for XP could be superior as compared to the one provided by your vendor for Windows 7 and above. This is particularly the case if your system was built/produced prior to the release of Windows 7/Vista.
I think I've read somewhere that the overhead for OGL is higher in Vista/7/8 as compared to XP for the same graphics card, since it has to jump more hoops to do the same thing. Again, this is highly dependant on your graphics card and how old it is. E.g. If you're on a card like the Radeon X series (2004/2005), the XP drivers are definitely superior to ones that AMD/ATI provides for Vista/7/8.
Number 2 culprit would be the additional demands of Windows 7 as compared to Windows XP on your system. For example, Aero Glass actually saps GPU power away from the emulator, and if your card is weak enough, you will notice the difference.
In conclusion, if your system is particularly ancient, it's best to stick with XP for the emulator.
PPSSPP Modern Testbed:-
Intel Core i5 4690K @ 4.0 GHz
NVIDIA Geforce GTX 760 2GB GDDR5 VRAM @ 1138/6500 Mhz
16 GB DDR3 RAM @ 1600 MHz
Windows 7 x64 SP1
PPSSPP Ancient Testing Rig:-
Intel Core 2 Duo T9550 @ 2.8GHz
ATI Mobility Radeon 4670 1GB GDDR3 VRAM @ 843/882 MHz
8 GB DDR3 RAM @ 1066 MHz
Windows 7 x64 SP1
Intel Core i5 4690K @ 4.0 GHz
NVIDIA Geforce GTX 760 2GB GDDR5 VRAM @ 1138/6500 Mhz
16 GB DDR3 RAM @ 1600 MHz
Windows 7 x64 SP1
PPSSPP Ancient Testing Rig:-
Intel Core 2 Duo T9550 @ 2.8GHz
ATI Mobility Radeon 4670 1GB GDDR3 VRAM @ 843/882 MHz
8 GB DDR3 RAM @ 1066 MHz
Windows 7 x64 SP1