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Following the footsteps of these gentlemen & crew:
I intend to upgrade the CPU in my Xbox, for Linux performance.
At some point (after I have an SMD rework station) I intend to upgrade the RAM also.
At this stage I'm just researching the feasibility, and seeing what I'm jumping into.
I believe I can use a CPU socket (495) from a mobile Pentium 3 to use a P3 1 GHz "SL53s" with minor accommodations made.
I will need to comb over the datasheets as I don't currently know If I can just "drop in" a faster 495 mobile celeron/P3, say after I've installed a CPU socket from an old laptop.
Processors I've seen photos of installed in adapters include:
SL5XL The Tualatin 1.4 GHz 512KB L2 Cache and 133MHz FSB
SL53S Seen in N64 Freak's 1GHz mod, apparently using a cpu w/ 100MHz FSB is not out of the question.
SL657 Seen in an adapter board somewhere.
I wouldn't try an SL6BY because the core voltage is lower than 1.5V and the original CPU used up to 1.7V
Some concerns I have:
VID Voltage Range, VID[4:0]
SSE Technology, SpeedStep Technology.
GTL+ (do any of the cpus use the older GTL, if not then it is not a concern at the moment)
Bus Speed: Can I use a chip with 100 MHz FSB? Nobody wants to downgrade..
L2 Cache: Does this matter? Can I simply use a chip with more, believe I can because Trusty & N64 freak have already done this without issue.
To slow the CPU speed, they are apparently using STPCLK# assertion. This is accomplished on the adapter PCB with the necessary support components added.
My first attempts will not include provisions to slow the performance, as playing games on the console will not be an immediate priority.
I'll have to check the usual places and see if I can locate a CPU area schematic for the Xbox, I believe it is in the wild, if anyone has details, please PM me!
The socket 370 to 495 adaptor shouldn't be too difficult to create seeing as how I have some datasheets to work from.
First attempt I will use a standard 495 PGA mobile cpu (currently looking for one w/133 FSB) in a recovered 495 socket, then comes the task of designing an adapter board to go from 495 to 370.
If N64 Freak would like to comment his words will be greatly appreciated, I'm not here to steal anyones thunder; just looking for a performance gain.
I have datasheets from that era attached below, I'll have to see if the SL5sn (xbox) CPU is mentioned.
---All The Best---
III Processor 1400 512KB L2.pdf
I have a softmodded xbox and would like to create a backup hard drive in case the softmodded drive in the console takes a dump! I know that the xbox hard drive is nulled! I also ftp'd the E:\ folder wich contains the eeprom.bin file to my pc for backup. Can I just ftp all the folders in the xbox hard drive to my pc to create a backup of entire drive? (I use filzilla to ftp files)