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New Pentium 5 Details - 5-7ghz?
zymano writes "This article gives some details on Pentium 5. It will have 64 bit extensions and maybe a 4000 mhz frontside bus. Quote from the article,'The Pentium V is likely to fly along at between 5GHz to 7GHz, have 2MB plus of level two cache, be built on a 90 nanometer process, and have a stackable design. '"
Stackable designs sound really cool in the sense that you can cut latency between processors (for things like cache coherence) to rediculously small levels, but what about cooling? Cooling ability is roughly proportional to surface area, and two stacked chips will make twice as much heat but have almost the same surface area as only one (as two sides cancel out). This has to be a problem.
No this is not a troll. I honestly wonder how they expect to accomplish this.
Anyone know?
Cheers,
Justin
The article doesn't say the processor will have 64-bit extensions. The article doesn't say anything.
Some quotes:
"The Pentium V is likely..."
"The processor we believe..."
"The final design of this arrangement is not set in stone."
"...details have not been confirmed,..."
"... the source claimed..."
"The Pentium V could have..."
"...although this may be reserved for the next chip along, the Nehalem"
This isn't news, this is BS speculation.
There's no point in raising the speed of the processor to 5GHz if the memory speed (esp. latency) can't keep pace.
4GHz front-side bus? Yeah, right.
Speaking of redundant...how many people have posted saying Pentium 5 is redundant?
There ain't no rules here; we're trying to accomplish something.
If you look at media benchmarks, encoding requires a lot of processing power. So, while ripping your DVD may not take any more time on your P3-1GHz versus your P4-2.4GHz, converting it to DivX MPEG-4 for your media jukebox will take significantly longer on the P3 than the P4. In fact, decoding H.264 video and WMP9 High Definition supposedly requires 3GHz (or the equivalent in AMD doublespeak) processors. Add to that the fact that you may want to do more than one thing at once (i.e. encode video in the background and play back another), and you will quickly run into a hard wall. Check out this link for a very nice roundup of how older processors fare against newer processors. A simple DV-to-MPEG2 conversion takes approximately twice as long on a P3-1GHz than it does on a P4-2.4GHz. That's a lot of time when you have a couple of hours of video to encode. Audio and image manipulation applications, video editing and the like will also benefit in similar ways.
Games, it goes without saying, scale in a similar way and a similar doubling of performance.
The caveat: for many business applications, you will hardly notice a difference. A faster I/O subsystem and more RAM, as you mention, will pay much larger dividends for these users than any processor upgrade will. In fact, this post is being written up on my trusty P2-400MHz all-SCSI box and it's still going strong, though it's getting a bit long in the tooth.