I own a hp zd8000 desktop replacement notebook that currently has a pentium 640ht 3.2ghz processor in it with the most up to date bios version that hp offers (f34). I ordered the new intel pentium 651ht 65nm cedar mill because of the lower wattage use and the lower heat it emits. However the notebook will not boot at all with the 651 in it. It powers on then shuts itself off imediately. I have a desktop motherboard that is suppose to handle the 651 on the way to test it on but I thought I would ask here to see if anyone can help. The notebook has the intel 915p chipset with the most up to date drivers available from intel. It seems to me this would be a viable option for people who love this notebook because of the less heat and by the way the notebook originally had a pentium 540jht in it that I upgraded to the 640ht a few months ago and installed myself and when I put the 640 back in there are no problems. Any help would be greatly appreciated. Thanks in advance.
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Install intel pentium 651ht cedar mill in hp zd8000 notebook
- Thread starter jarcuri
- Start date
I suspect that the 915P Intel chipset is not compatible with this new 65nm core.
I have tried to find more definitive information but could only turn up this vague reference to possible incompatibility:
Quote from X-bit labs:
A few days ago some sources reported that according to ASUSTeK Computer, the new 65nm desktop processors from Intel, such as Presler and Cedar Mill, will only be supported by platforms based on Intel’s most recent chipsets. Nevertheless, some sources close to other mainboard makers indicated that single-core Cedar Mill processors may work on mainboards based on older chipsets from Intel Corp. as well, however, whether they work or not fully depends on the particular system board.
Intel or indeed HP must have a recent CPU compatibility
list somewhere.
Martin
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I have tried to find more definitive information but could only turn up this vague reference to possible incompatibility:
Quote from X-bit labs:
A few days ago some sources reported that according to ASUSTeK Computer, the new 65nm desktop processors from Intel, such as Presler and Cedar Mill, will only be supported by platforms based on Intel’s most recent chipsets. Nevertheless, some sources close to other mainboard makers indicated that single-core Cedar Mill processors may work on mainboards based on older chipsets from Intel Corp. as well, however, whether they work or not fully depends on the particular system board.
Intel or indeed HP must have a recent CPU compatibility
list somewhere.
Martin
We like members to GIVE and not just TAKE.
Participate and help others.
- Thread starter
- #3
Before I ordered the 651 I did everything I could to make sure my zd8000 system was compatible because you can't send them back just because they don't work in your setup. Here is the link to Intel's website that states the 915p chipset is optimized for the 651,
Of course this is not my first rodeo and I know just because it says it doesn't mean it's true. But when I discovered the problem I got on the web and ordered a desktop motherboard with the same chipset (optimized for cedar mill, this board can also be ordered with the 651 installed) because my plan all along was to take my "old" (3 months old) 640 and build a new system for my son who is a freshman at LSU (3.575 gpa first semester)on a full academic scholarship and his mom bought him an EMachine to use for school.(what a joke that is) He deserves and has earned better so I'm building him one and he is either going to end up with the 651 or the 640. Actually I am hoping it's just a bad chip but I have ordered a ton of new Intel cpu's over the years and have never gotten a bad one so this is just a shot in the dark.
Actually what I think the real problem is the Bios. The most recent hp bios update (f34) for my system states that it includes the microcode for the 520ht and 521ht, which with this notebook desktop replacement those cpu's were never an ordering option. The 640ht is one of the cpu's that can be ordered with the zd8000. I guess I'll step up to the 650ht 3.4ghz if I give him the 651. But I'm guessing all I need is hp to update the bios and write in the code for the 65nm chips and not just the 90nm chips. A 30% reduction in heat output will make my system last a lot longer and I belong to a zd8000 forum where a lot of them are talking about replacing their current cpu's with one of the cedar mill processors, I'm the first guinea pig with enough guts to tear the notebook apart and try it. (and let me tell you, it is about 10 times harder than working on a desktop, about 100 tiny little screws that if you don't put them back in the right place it is not that they don't just fit but causes all kinds of hardware problems, for instance if the retaining screw is not installed in the cd/dvd reader-writer the cd/dvd is not powered up so device manager can recognize it. It has power but with the screw out device manager does not recognize it.
How do I get hp to write in the bios the micrcode for the cedar mill? Any ideas? I know enough people interested in doing this that it would be no problem to get a couple of hundred emails sent to hp.
Thanks for your help. Any other ideas?
Of course this is not my first rodeo and I know just because it says it doesn't mean it's true. But when I discovered the problem I got on the web and ordered a desktop motherboard with the same chipset (optimized for cedar mill, this board can also be ordered with the 651 installed) because my plan all along was to take my "old" (3 months old) 640 and build a new system for my son who is a freshman at LSU (3.575 gpa first semester)on a full academic scholarship and his mom bought him an EMachine to use for school.(what a joke that is) He deserves and has earned better so I'm building him one and he is either going to end up with the 651 or the 640. Actually I am hoping it's just a bad chip but I have ordered a ton of new Intel cpu's over the years and have never gotten a bad one so this is just a shot in the dark.
Actually what I think the real problem is the Bios. The most recent hp bios update (f34) for my system states that it includes the microcode for the 520ht and 521ht, which with this notebook desktop replacement those cpu's were never an ordering option. The 640ht is one of the cpu's that can be ordered with the zd8000. I guess I'll step up to the 650ht 3.4ghz if I give him the 651. But I'm guessing all I need is hp to update the bios and write in the code for the 65nm chips and not just the 90nm chips. A 30% reduction in heat output will make my system last a lot longer and I belong to a zd8000 forum where a lot of them are talking about replacing their current cpu's with one of the cedar mill processors, I'm the first guinea pig with enough guts to tear the notebook apart and try it. (and let me tell you, it is about 10 times harder than working on a desktop, about 100 tiny little screws that if you don't put them back in the right place it is not that they don't just fit but causes all kinds of hardware problems, for instance if the retaining screw is not installed in the cd/dvd reader-writer the cd/dvd is not powered up so device manager can recognize it. It has power but with the screw out device manager does not recognize it.
How do I get hp to write in the bios the micrcode for the cedar mill? Any ideas? I know enough people interested in doing this that it would be no problem to get a couple of hundred emails sent to hp.
Thanks for your help. Any other ideas?
jarcuri
Exactly the info I couldn't find! doh!
But I concur it certainly appears your chipset will support it and I also concur that it's just the code in the bios isn't new enough.
GET YOUR FINGERS OUT HP!!!!! lol
Definately worth as many emails as you can to technical support, they might send you a beta if you're lucky because this thing has got to be already written it's just that they are slow to post.
All the very best of luck to you and yours
Martin
We like members to GIVE and not just TAKE.
Participate and help others.
Exactly the info I couldn't find! doh!
But I concur it certainly appears your chipset will support it and I also concur that it's just the code in the bios isn't new enough.
GET YOUR FINGERS OUT HP!!!!! lol
Definately worth as many emails as you can to technical support, they might send you a beta if you're lucky because this thing has got to be already written it's just that they are slow to post.
All the very best of luck to you and yours
Martin
We like members to GIVE and not just TAKE.
Participate and help others.
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