Intel Core 2 Updates, QX6850 and E6750 105
An anonymous reader writes "As AMD's Barcelona approaches, the price war between AMD and Intel continues. To spice things up a bit this week, Intel is throwing into the ring a number of new processors, refreshing the Core2 line-up. HEXUS reviews the high-end QX6850 and mid-range E6750: 'Now is a golden time for anyone looking to buy a new CPU, whether Intel or AMD. The latest round of price cuts means you can now get an incredible level of processing performance for little more than £100. But if your need to buy is not urgent, remember that Intel and its big rival are each promising new processors before the end of the year — AMD with K10 quad-core and Intel with 45nm Penryn-derived CPUs.'"
Unasked, unanswered question (Score:5, Insightful)
Re:Unasked, unanswered question (Score:4, Insightful)
Also to be included: New DRM technology (Score:0, Insightful)
This will be the on-die partner of Trusted Platform Module, which is already built into motherboards of this generation.
From Wikipedia:
(Link) [wikipedia.org] Personally, I'm going to avoid this technology if I possibly can.
Re:Unasked, unanswered question (Score:5, Insightful)
For me, choosing any CPU that has known security bugs to be used on any connected computer is reason enough to be fired.
Saying that these bugs "allow any script kid to compromise your servers in unprecedented ways" is totally over the top.
It is just FUD, until someone can actually point out a realistic code execution vulnerability, or even a PoC, even one that could be exploited in unrealistic scenarios, even a DoS, an idea, anything!
I wouldn't mind an AMD X2 BUT... (Score:3, Insightful)
So the workaround I use at work is to never let the cores idle and always run them at full speed. Boot linux with idle=poll.
Ironically, the AMD X2s supposedly use less power than the Core 2 Duos while idle...
Apparently AMD say they're going to fix the TSC stuff, and though it's been quite a while since they said that, AFAIK I don't think it's been fixed. So if I had to buy a CPU today for a desktop computer, it'll be a Core 2 Duo. The alleged Core 2 Duo security bugs don't appear to be being exploited by hackers all the time, whereas this AMD X2 TSC problem is always there.
I believe there are Windows gamers who are having problems with their AMD X2s and end up running the game/app only on one core and it's probably due to this TSC problem. Yeah the programmers shouldn't use TSC etc etc. But really what are their choices? See [1]
[1] Why can't the CPU + hardware + OS people get together and come up with something good for something as basic as time keeping?
As Vojtech Pavlik summarizes:
RTC: 0.5 sec resolution, interrupts
PIT: takes ages to read, overflows at each timer interrupt
PMTMR: takes ages to read, overflows in approx 4 seconds, no interrupt
HPET: slow to read, overflows in 5 minutes. Nice, but usually not present.
TSC: fast, completely unreliable. Frequency changes, CPUs diverge over time.
LAPIC: reasonably fast, unreliable, per-cpu
http://lkml.org/lkml/2005/11/18/261
Re:Real Benefits on the Low End (Score:3, Insightful)
Then we'd have a monopoly and both bus and CPU would suck! Sweet!