X-bit labs

Sunday, July 3, 2005

Dual-Core Chips Perform Under Linux. Modern Dual-Core Chips Compared Under Linux

Linux operating system (OS) has been capable of utilizing multiple processors and, therefore, multi-core setups for almost a decade. Nowadays a lot of typically used applications in Windows XP work normally in Linux OS, which is why AnandTech has carried out an investigation into dual-core CPU performancev under  Linux operating system. The author uses a number of tests to emulate different environments, which may benefit from utilizing an additional CPU core.

“The Windows tests are not quite the same as our Linux ones in all cases, making it hard to draw accurate conclusions between operating systems. On the other hand, we have left a lot of not-so-subtle hints as to our feelings concerning performance between the two. Benchmarks like the DVD transcoding performed poorer on Linux but we noticed tighter disparity between the single core and dual core chips. Some benchmarks, like the Doom3 analysis, proved excessively in AMD’s favor. This also happens to be true in single core and Windows benchmarks, so it’s hard to really call this a design win for AMD on just Linux. There were other instances where AMD had a running start and never looked back, like the last Neverwinter Nights benchmark on the previous page. Intel came out ahead in all three of our first benchmarks; which was certainly an interesting refresh as well,” concludes the author.

“At $540 you pay through the nose for the additional performance of the Athlon 64 X2 4200+ (paying $558 for a Pentium D 840 isn’t exactly a bargain either). In our opinion, the Pentium D 820 is really an underdog in this roundup, but don’t let the $252 price tag fool you; at the time we were obtaining the hardware for this analysis we had to spend an extra $50 over the cost of the OCZ memory used in the AMD system for the Corsair DDR2. Furthermore, the poor performance on Doom3 hints at something most of us already know; Athlon 64 beats the pants off Intel in games, even on Linux. If you don’t plan on gaming much on Linux, the Pentium D 820 becomes a real tempting option,” adds AnandTech.

• AnandTech: Dual Core Linux Performance: Two Penguins are Better than One.

Intel Pentium M Under Dry Ice Cooling. Mobile Processor Extremely Overclocked

Madshrimps has posted another article about using dry ice, or frozen carbon dioxide. This new issue provides an updated detailed guide on how to reach sub zero temperatures with using the dry ice, including how to build cooling-containers, mount them on a processor or graphics card and how to protect you hardware in such extreme environment. The author also managed to overclock Intel Pentium M 730J microprocessor from stock frequency of 1600MHz up to 3160MHz.

“Asus P4C800-E Deluxe rev; 1.03 featuring a vdroop mod, vcore mod and kyosen vdimm mod, in short, ready for over-volted action. The sweet spot of the CPU was found after only a couple of minutes, the Dothan 1.6GHz tops out at 3160Mhz, which is extremely close to a 100% OC!”, reports Madshrimps.

• Madshrimps: Intel Dothan Overclocking, Going for 100% OC on Dry Ice.