Post by mikamika on Mar 26, 2021 10:44:56 GMT
Hi
I have MBP 16 with 5500M 4GB card, and I have installed Win10 Home to bootcamp (genuine version for MS site, not activated). Also I installed latest driver from bootcampdrivers.com
When I use native screen resolution 3072x1920, card works as expected: adjusting core/memory frequency according to load. Minimum power draw is about 7W. At heavy 3D load core rises frequency to about 1200 MHz, with power draw near 40W. This is what I expect from card.
But when I reduce screen resolution (in Windows display settings or in 3d game), I have very different (and weird!) card behaviour:
- Memory clock is locked at 1400 MHz (or so) at any moment, even when displaying Windows desktop
- Minimum power draw is 16W (no load at all!)
After launching 3D application I get:
- Core frequency is about 490 MHz, then (quite soon) lowered to 290 Mhz
- Memory clock stays the same at 1400+ MHz
- Max power draw (cool system) is 27W, then - 21
- GPU temperature is about 81 C.
So, I can't play 3D games because:
- Full GPU power is unleashed on full screen resolution, when gpu power is not enough
- When using reduced resolution (1680x1650) GPU clock covered by 3-4 times, and gpu power is not enough again.
I tried to reinstall windows and drivers, I used January and latest March drivers, but nothing changed.
I have MBP 16 with 5500M 4GB card, and I have installed Win10 Home to bootcamp (genuine version for MS site, not activated). Also I installed latest driver from bootcampdrivers.com
When I use native screen resolution 3072x1920, card works as expected: adjusting core/memory frequency according to load. Minimum power draw is about 7W. At heavy 3D load core rises frequency to about 1200 MHz, with power draw near 40W. This is what I expect from card.
But when I reduce screen resolution (in Windows display settings or in 3d game), I have very different (and weird!) card behaviour:
- Memory clock is locked at 1400 MHz (or so) at any moment, even when displaying Windows desktop
- Minimum power draw is 16W (no load at all!)
After launching 3D application I get:
- Core frequency is about 490 MHz, then (quite soon) lowered to 290 Mhz
- Memory clock stays the same at 1400+ MHz
- Max power draw (cool system) is 27W, then - 21
- GPU temperature is about 81 C.
So, I can't play 3D games because:
- Full GPU power is unleashed on full screen resolution, when gpu power is not enough
- When using reduced resolution (1680x1650) GPU clock covered by 3-4 times, and gpu power is not enough again.
I tried to reinstall windows and drivers, I used January and latest March drivers, but nothing changed.
