Most of the remaining tests showed no benefit, and in the case of heavily threaded tasks the bus overclock actually reduced performance. 3DMark03/05 both increased, with Peacekeeper and the single-threaded Cinebench result showing the greatest benefit. The workloads that are primarily single-threaded in nature showed the biggest improvements. M11x R2 Overclocking Gains - Applications So, what does overclocking get you? In certain situations we got much better performance, but overall it wasn't worth the effort in our opinion. (SpeedStep can still drop down to a 5x multiplier, but under load we always stayed above 9x.) What's more, in heavily threaded benchmarks the multipliers were much lower on average, with the system often running at the "minimum" 9x. At 160MHz we still saw multipliers as high as 17x, but not as often as when we were on the stock 133MHz bus. You can disable Turbo Boost in the BIOS, but even at a 166 bus speed you would then be stuck with a constant CPU clock of only 1500MHz. Note that the stock multiplier for the i7-640UM is 9x, but with Turbo Boost it can go as high as 17x. Eventually we settled on 160MHz and achieved full stability. A 164MHz bus on the other hand would boot Windows most of the time, but various games and applications would crash. At 166, the system would reboot twice and revert to 133. Whereas we could simply set the bus speed to 166MHz (from the default 133) with the other laptops we've tested, this is our first Arrandale ULV processor and it didn't quite make it to a 166 bus. Like the M11x and ASUS' UL series of CULV laptops, the M11x R2 allows you to try overclocking the CPU via the BIOS. Overclocked Performance: Win Some, Lose Some
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |