Uusi MBP 13", i7 ongelmat bootcamp & OSX

[securapple]

Hei!

Notebookcheck.net: n mukaan nopeampi 13" mbp i7 ei turboa bootcampissa, ja kovassa käytössä kellotaajuutta joudutaan jopa laskemaan lämpöjen vuoksi pahimmillaan 800mhz :aan asti.

Cpu&Gpu joudutaan alikellottamaan myös OS X:ssä intensiivisen käytön jälkeen 2.3 -2.5 ghz :aan.

Ilmeisesti muut mbp:t turboaa bootcampissa speksien mukaisesti.

LÄHDE :
mbp 2.3 i5 ghz review : http://www.notebookcheck.net/Review-App ... 409.0.html
mbp 2.7 i7 ghz review : http://www.notebookcheck.net/Review-App ... 631.0.html

-Securapple

[Hount]

The fastest mobile dual-core processor finds its place in a compact 13" notebook and the fans stay quiet? Sounds like a huge challenge that isn't very well dealt with. Particularly in Windows does the i7 CPU quickly reach its thermal limits. On top of that, the power supply is pushed to the max, which might account for the lower clock rate observed under heavy use.

Kone ylikuumenee ja virtalähde on alimitoitettu?

In Windows 7, we observed the processor performance under various levels of stress using the HWInfo32 tool. The processor temperature quickly climbs to near the 100°C suggested maximum temperature. With extreme stress (Furmark + Prime95) we observed an occasional downsampling of the CPU via the EFI (BIOS equivalent) down to 800 MHz. On top of that, the tool also pointed to a thermal throttling of both processor cores. This happens automatically when the CPU reaches a temperature of over 100°C. This however only occurs during the stress test, which is a good deal more extreme than everyday conditions—under normal use this should come up very rarely to never. Other than the very extreme, we tested a few other scenarios.

Okei, Furmark + Prime95 on vähän turhan extremeä.

After running the highly demanding Battlefield Bad Company 2 and Call of Duty Black Ops for a while, we noticed that the CPU was being downsampled to 800 MHz by the EFI. In Cinebench R11.5 CPU benchmark, no such dropping of the clock rate was observed, the CPU staying at a constant 2.7 GHz.

Mutta pelaaminen ei! Jos ostat koneen myös satunnaista pelaamista varten, niin voinet olettaa sen olevan pelatessa myös 2.7 GHz eikä 0.8 GHz...
Olisiko Steamin multiplatform -pelien järjestelmävaatimuksia syytä päivittää? Esim. Portal 2 vaatii mäkillä 2.0 GHz Core 2 Duo:n... veikkaan ettei 0.8 GHz Core i7 ihan vastaa sitä.

Running 3DMark05 a second time right after the stress test yielded an 8% lower result than the first run-through on a "cold" system. Since Turbo Boost seems to be deactivated in Windows, this might be attributable to the throttling.

3DMark05 on aika lyhyt testi. Mitenköhän olisi tilanne kääntynyt jos testiä olisi ajettu looppina tunteja. Vastaa lähempänä pelaamista, koska kuka pelaa vain 90 sekuntia kerrallaan?

Windows 7 is clearly not the best operating system for the MacBook Pro and therefore its performance in Mac OS X is much more meaningful for the ratings we give it. Considering the much better benchmark results in Mac OS than in Windows, we can say Turbo Boost was running in Mac OS during these benchmarks. Using the MSR tool, we observed downsampling to a much lesser degree in Mac OS X. When running CB 11.5 and StarCraft 2 simultaneously, the clock rates of the two cores dropped slightly to 2.3 and 2.5GHz. Apparently, Mac OS X uses energy and cools the system much more efficiently than the Windows driver, Bootcamp.

Tuo boldattu kohta pisti silmään. Vaikka Apple tarjoaakin mahdollisuuden asentaa Windowsin, niin ei se tarkoita että sitä katsotaan Applella myötämielisesti. Kaikkensa yrittävät että ihmiset pysyisivät OS X:ssä.

- Hount