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CPU Upgrade Compatibility Question
CPU COMPATIBILITY QUESTION
I own: Dell DIMENSION DIM2350 Asset Tag: 42JJ421 Express Service Code: 886-086-612-1 with this current CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz 1.79 GHz, 256MB of RAM http://processorfinder.intel.com/det...px?sSpec=SL6LA and recently purchased this CPU: http://processorfinder.intel.com/det...px?sSpec=SL7PM After installation, the computer would not start up. I reinstalled the old CPU and it started fine. I then downloaded and flashed the BIOS to A02 from A00. After installing the new CPU it again would not start up. Could you tell me why you think the computer will not start? My suspicion is that it is because the CPU is not compatible with the motherboard. It could also just be a DOA CPU. If it is not compatible, why not? What else do I need to look for when purchasing CPUs other than socket type? |
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CPU Upgrade Compatibility Question
"Aaron" wrote:
CPU COMPATIBILITY QUESTION I own: Dell DIMENSION DIM2350 Asset Tag: 42JJ421 Express Service Code: 886-086-612-1 compatible, why not? What else do I need to look for when purchasing CPUs other than socket type? http://support.dell.com/support/edocs/systems/dim2350/ Whatever else Dell might be, in my opinion their online support is very helpful/useful. |
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CPU Upgrade Compatibility Question
"Aaron" wrote in message ups.com... CPU COMPATIBILITY QUESTION I own: Dell DIMENSION DIM2350 Asset Tag: 42JJ421 Express Service Code: 886-086-612-1 with this current CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz 1.79 GHz, 256MB of RAM http://processorfinder.intel.com/det...px?sSpec=SL6LA and recently purchased this CPU: http://processorfinder.intel.com/det...px?sSpec=SL7PM After installation, the computer would not start up. I reinstalled the old CPU and it started fine. I then downloaded and flashed the BIOS to A02 from A00. After installing the new CPU it again would not start up. Could you tell me why you think the computer will not start? My suspicion is that it is because the CPU is not compatible with the motherboard. It could also just be a DOA CPU. If it is not compatible, why not? What else do I need to look for when purchasing CPUs other than socket type? ___________________________________________ That processor isn't compatible with your motherboard. The latest and greatest Pentium 4 that was supported by your motherboard would be the 2.66GHz 533FSB 0.13nm 1.53V Pentium 4 found at http://processorfinder.intel.com/det...px?sSpec=SL6PE If you can find this CPU, it'd probably be around $70, but if you want to keep using your Dell, you'd get a bigger performance boost by installing additional memory instead. Your motherboard supports a maximum of 1GB memory, which would offer a big performance boost over your current 256MB. I'd also flash back to the A02 BIOS, as it is the latest for that system and offers quite a few fixes over the original A00 version, particularly with processor and memory support. Russell http://tastycomputers.com |
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CPU Upgrade Compatibility Question
The CPU you recently purchased is INCOMPATIBLE with your motherboard. The
CPU you were using operates at an internal bus speed of 400 MHz. The new CPU operates at an internal bus speed of 800 MHz. You cannot do that. -- DaveW ---------------- "Aaron" wrote in message ups.com... CPU COMPATIBILITY QUESTION I own: Dell DIMENSION DIM2350 Asset Tag: 42JJ421 Express Service Code: 886-086-612-1 with this current CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz 1.79 GHz, 256MB of RAM http://processorfinder.intel.com/det...px?sSpec=SL6LA and recently purchased this CPU: http://processorfinder.intel.com/det...px?sSpec=SL7PM After installation, the computer would not start up. I reinstalled the old CPU and it started fine. I then downloaded and flashed the BIOS to A02 from A00. After installing the new CPU it again would not start up. Could you tell me why you think the computer will not start? My suspicion is that it is because the CPU is not compatible with the motherboard. It could also just be a DOA CPU. If it is not compatible, why not? What else do I need to look for when purchasing CPUs other than socket type? |
#5
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CPU Upgrade Compatibility Question
Aaron wrote:
CPU COMPATIBILITY QUESTION I own: Dell DIMENSION DIM2350 Asset Tag: 42JJ421 Express Service Code: 886-086-612-1 with this current CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz 1.79 GHz, 256MB of RAM http://processorfinder.intel.com/det...px?sSpec=SL6LA and recently purchased this CPU: http://processorfinder.intel.com/det...px?sSpec=SL7PM After installation, the computer would not start up. I reinstalled the old CPU and it started fine. I then downloaded and flashed the BIOS to A02 from A00. After installing the new CPU it again would not start up. Could you tell me why you think the computer will not start? My suspicion is that it is because the CPU is not compatible with the motherboard. It could also just be a DOA CPU. If it is not compatible, why not? What else do I need to look for when purchasing CPUs other than socket type? There are a couple of processor types that do that. The Celeron D is one of them. The Pentium 4 90nm (nanometer geometry) 1MB L2 cache processor is another. You bought one of the affected Pentium 4 processors. There is a pin on the bottom of the processor, and Intel designed the new processors, to "sense" what kind of motherboard they are plugged into. The older motherboards are not "Prescott Ready". Their status signal is wrong for the processor. Newer socket 478 motherboards, have that status signal set to the other state. When a Celeron D or P4 90nm 1MB L2 is plugged into a "Prescott Ready" S478 socket, the processors will execute instructions, and the computer can boot. There should be no damage to the new processor, when it finds the wrong status signal value. The processor simply refuses to execute any instructions, and you get a "black screen" at powerup. As Russell suggested, something from the Northwood (0.13u geometry) family would work. You'd want a processor with an FSB that matches the fastest FSB setting your motherboard has. Your existing processor is FSB400 by the looks of it. This page says the chipset is 845GL and FSB is FSB400. http://support.dell.com/support/edoc...2350/specs.htm This Intel page confirms the 845GL is FSB400. http://www.intel.com/design/chipsets/mature/index.htm The P4 2.8GHz/FSB400/512KB cache processor in the upper left hand corner of this page, is the fastest FSB400 processor you can buy. It seems to work in some FSB400 motherboards from that era. But I feel more comfortable, when I find a chart that verifies what has been tested, or is known to work. http://www.powerleap.com/Processors.jsp This is the info for that processor. It is 0.13u. The family code is 0F29. One thing you can do, in preparing for the upgrade, is disassemble the BIOS file for the motherboard, and check that a microcode for 0F29 exists in there. That helps suggest whether the BIOS was designed for that upgrade or not, but is not a sufficient condition to guarantee it will work. http://processorfinder.intel.com/Det...px?sSpec=SL7EY OK, to save you the trouble, I downloaded the A02 BIOS (used the floppy version, in the hope that the BIOS would be a separate file), used a hex editor on 2350_A02.exe, found the BIOS section, searched for "-lh5" in the file, until I found an -lh5 with CPUCODE.BIN after it, snipped out the section with the -lh5, to the next one, fed the 8181 byte resulting file, to LHA.EXE, a decompressor for LHA compressed files. The result is CPUCODE.BIN in uncompressed form, exactly 8192 bytes. Scanning the file with my eyeball, there are four microcode patches in there, for 0F13, 0F24, 0F27, and 0F29 family code processors. The 2.8GHz/FSB400 would be covered by the last microcode patch I found. So that is a positive sign, but not a guarantee. So Powerleap has one for $229. And this site has a "pull" from working equipment, for $184. http://www.pcprogress.com/product.as...%2D512%2D28OEM One listed here for $171. Maybe this is a new one, hard to say. http://www.starmicro.net/detail.aspx?ID=542 Those prices were found on Pricewatch. The prices are that high, because the companies don't want to lose money on what they paid for them. The more modern processors Intel is cleaing out, are about 1/3rd the price. But that is what it takes to get a FSB400 processor. This 2.6GHz/FSB400/512KB is a bit cheaper, at $127. http://www.starmicro.net/detail.aspx?ID=115 Paul |
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