08-24-2004, 03:12 AM
|
|
Pontificator
Join Date: Feb 2004
Posts: 1,423
|
|
Pentium 4 2.8 GHz running at 1.4...WHY?? G-mail for answerer!
I'll give away a G-mail invite to the person who can resolve this. I'm not kidding - I really need help. :cry:
I just built a system with a new P4 2.8 GHz CPU. Windows recognizes it as 2.8 in "system" but lists "1.4" right below that. The BIOS isn't much help either. It POSTS at 1.4.
It IS a hyperthreading CPU, but the motherboard (Shuttle) is only 533. The mobo should be able to run it at 2.8 with a 533 FSB, right?
|
| |
|
|
|
08-24-2004, 03:47 AM
|
|
Pontificator
Join Date: Apr 2004
Posts: 1,120
|
|
Re: Pentium 4 2.8 GHz running at 1.4...WHY?? G-mail for answerer!
Quote:
|
Originally Posted by David Prahl
I'll give away a G-mail invite to the person who can resolve this. I'm not kidding - I really need help. :cry:
I just built a system with a new P4 2.8 GHz CPU. Windows recognizes it as 2.8 in "system" but lists "1.4" right below that. The BIOS isn't much help either. It POSTS at 1.4.
It IS a hyperthreading CPU, but the motherboard (Shuttle) is only 533. The mobo should be able to run it at 2.8 with a 533 FSB, right?
|
If I recall correctly, the newer P4 CPUs are multiplier-locked, forcing the CPU to run at a set multiple of the FSB. Chances are, your non-HT motherboard is running the P4 using only one of its two 400 MHz FSBs, thus resulting in half the rated speed. My advice would be to replace the motherboard with something that natively supports 800 MHz HT. Wish I could give you a simpler and less painful answer. |
| |
|
|
|
08-24-2004, 05:25 AM
|
|
Contributing Editor
Join Date: Aug 2006
Posts: 14,938
|
|
Re: Pentium 4 2.8 GHz running at 1.4...WHY?? G-mail for answerer!
Quote:
|
Originally Posted by David Prahl
It IS a hyperthreading CPU, but the motherboard (Shuttle) is only 533. The mobo should be able to run it at 2.8 with a 533 FSB, right?
|
ADBrown is right on the money. There are three editions of 2.8GHz chips. The HT ones absolutely need a 800MHz FSB-capable mainboard to run at full speed. That's because the multiplier is locked at 3.5. 400 * 3.5 = 1400, so your MB is running it at 400MHz.
Time to buy a new mainboard. 
--janak |
| |
|
|
|
08-24-2004, 05:26 AM
|
|
News Editor
Join Date: Aug 2006
Posts: 12,538
|
|
When you say it reports 1.4, are you referring to the page that appears when you right-click My Computer and select Properties?
The information listed there is localised in the registry, so if you think you're CPU is running at 2.8, it may well be, and it just may be your registry has been messed around with.
|
| |
|
|
|
08-24-2004, 05:27 AM
|
|
Contributing Editor
Join Date: Aug 2006
Posts: 14,938
|
|
Quote:
|
Originally Posted by DJ Apod
When you say it reports 1.4, are you referring to the page that appears when you right-click My Computer and select Properties?
|
POSTs at 1.4 strongly implies at boot time.
Quote:
|
The information listed there is localised in the registry, so if you think you're CPU is running at 2.8, it may well be, and it just may be your registry has been messed around with.
|
Are you sure about that? All of my PCs correctly display the speed of their CPU without any registry tweaking. I'm pretty sure 2k and XP actually query the CPU speed.
--janak |
| |
|
|
|
08-24-2004, 12:06 PM
|
|
Philosopher
Join Date: Feb 2004
Posts: 551
|
|
HEAPS of Gmail invites were sent out today/yesterday! If you don't know go looking and you will most likely find one!
|
| |
|
|
|
08-24-2004, 01:10 PM
|
|
Sage
Join Date: May 2004
Posts: 608
|
|
Quote:
|
Originally Posted by dmacburry2003
HEAPS of Gmail invites were sent out today/yesterday! If you don't know go looking and you will most likely find one!
|
:bawl: |
| |
|
|
|
08-24-2004, 04:35 PM
|
|
News Editor
Join Date: Aug 2006
Posts: 12,538
|
|
Quote:
|
Originally Posted by Janak Parekh
POSTs at 1.4 strongly implies at boot time. |
Oh whoops. I didn't see POSTs. My mistake. And yes it does imply that.
Quote:
|
Originally Posted by Janak Parekh
Are you sure about that? All of my PCs correctly display the speed of their CPU without any registry tweaking. I'm pretty sure 2k and XP actually query the CPU speed.
--janak
|
I'll use my one as an example. On that page, it says: Intel(R) Pentium(R) 4 CPU 2.60GHz, 2.61GHz, 1.00GB of RAM.
The Intel(R) Pentium(R) 4 CPU 2.60GHz part is highly modifiable within the registry. The second part (2.61GHz) is what the system reports.
When I was referring to the "registry", I was merely talking about the baseline information that is kept in there so that the "average-joe" user knows that he/she is using a P4. This is modifiable. However, the computer does query the CPU speed as you suggested. Hope that clarifies things.  |
| |
|
|
|
08-24-2004, 07:08 PM
|
|
Mystic
Join Date: Sep 2003
Posts: 1,830
|
|
Quote:
|
Originally Posted by mrkablooey
Quote:
|
Originally Posted by dmacburry2003
HEAPS of Gmail invites were sent out today/yesterday! If you don't know go looking and you will most likely find one!
|
:bawl: |
Why the :bawl:? |
| |
|
|
|
08-24-2004, 07:32 PM
|
|
Contributing Editor
Join Date: Aug 2006
Posts: 14,938
|
|
Quote:
|
Originally Posted by DJ Apod
I'll use my one as an example. On that page, it says: Intel(R) Pentium(R) 4 CPU 2.60GHz, 2.61GHz, 1.00GB of RAM.
The Intel(R) Pentium(R) 4 CPU 2.60GHz part is highly modifiable within the registry. The second part (2.61GHz) is what the system reports.
|
Interesting -- I didn't realize the first number was changeable -- I thought it was whatever the processor/BIOS "reported" to Windows. Thanks for the heads-up. 8)
--janak |
| |
|
|
|
|
|
Linear Mode
