Jump to content
OGXbox.com

neighbor

Members
 View Profile  See their activity

  • Posts

    342

  • Joined

  • Last visited

  • Days Won

    10

 Content Type 

Posts posted by neighbor

  4. Theoretical Gpu Overclock

    in Hardware Mods

    Posted

    2 hours ago, Blobby85 said:

    Could you share the xbe for Halo in 720p? Never managed to get this right by myself

    this thing was shared to me and told to not share it to anyone, I will ask the guy if he changed his mind. The idea behind this, is to finish the optimisations then release, but need to ask the guy.

  5. Theoretical Gpu Overclock

    in Hardware Mods

    Posted

    buds, can anybody link to a tutorial on how to setup a devkit environment and be able to monitor the use of machine resources during runtime? I already have a Xbox with IND 5003 bios which was set up to boot the default.xbx, system also has 128mb ram and an attached hard drive which boots the debug kit dash. Want to see what are the parts which can't handle Halo in 720p.

  6. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    some other thoughts about RAM chips:

    so if the South Bridge and RAM are overclocking with the raise of Front Side Bus, and their default stock clock is 200mhz (when FSB is 133mhz), then they are probably clocked at 237mhz (when FSB is 158mhz)

    158/133=1.187

    200*1.187=237.4

    that's way higher than the declared top speed for this chips, I won't blame MS for this.

    Does it look right, or I am missing something?

  7. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    some other thoughts regarding RAM:

    N64F said he soldered 8 Hynix RAM chips to a Xbox motherboard (other than 1.6 rev obviously), does it mean that there is posibility to install some other chips other than the stock ones which came in Xbox-es? maybe the MCPX rom just checks the RAM chip's speed only?spacer.png

    HY5DU283222AQ family datasheet

    will try to buy HY5DU283222AQ from here

     

    Quote

    if there is any interest i can source a couple of the QC-40 Ram chips and do a Board that also has the stock 64mb replaced

    Sure N64Freak, it's very interesting, please do.

    • Like 1

  8. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    REPORT:
    I have 2 boards, ONE which was used for the overclocks, and TWO which was not touched until now, both with 1ghz CPU.

    Board ONE was clocking to NVCLK 315mhz, FSB 158mhz, so I decided to overclock board TWO, but it was stuck at NVCLK 270mhz, FSB 140mhz, anything higher just froze the Xbox. The first thought was, the need to replace capacitors, so all the caps from board ONE were desoldered and put on board TWO. Even after this, board TWO was showing the same exact problems, no changes. 

    Then desoldered the additional RAM chips from board ONE and soldered to board TWO - same thing, same problems, can't clock higher. The last attempt will be to desolder the remaining 4 stock RAM chips from board ONE and solder them in place of stock RAM chips on board TWO, so all the RAM chips which were on board ONE - will be planted to board TWO.

     

    other notes:

    - same PSU used for both motherboards

    - additional cooling powered by outside source (not from Xbox motherboard)

    - only SMD capacitors were not replaced, most of them are near the video and network connectors, and only one near the MCPX chip

    - both boards are 1.0 rev

    - was overclocking only FSB and only NVCLK, both ways the top speeds were same as if they both were overclocked simultaneously

    expectations:

    - to place all the RAM chips from board ONE to TWO and see if the RAM chips are the reason of this issue

     

    any thoughts?

     

    ps. Can anyone try the overclock on a stock Xbox with 733mhz CPU?

    • Thanks 1

  9. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    44 minutes ago, samspin said:

    http://xboxdevwiki.net/File:Haxar-a20m.jpg shows you only need to solder one wire to accomplish this.

    I can do that on the hardware side, but on the code side I'm lost. Isn't the RAM overclocking already when the FSB is increased? as WulfyStylez says in the description:

    "Currently, NVCLK (NV2A GPU core) and FSB (system front-side bus, used by CPU, SB, ...) clocks can be adjusted."

    BTW, isn't that MCPX code relocation a potential way to let Xbox see RAM chips of bigger capacity?

    Also, most of the games I tried in 720p, have a lot of lag when too much effects appear, like reflections, shadows, dust, smoke. fog. Do you have any ideas if there are DirectX8 calls which are responsible for reflections or shadows, which can be disabled or changed (in the default.xbe) in a manner to reduce them in-game, and make the game run smooth?

     

    oh yeah, a lot of noob questions, as my skill and knowledge are very basic.

     

    update:

    one of my mates suggested to replace all the capacitors on the motherboard and probably PSU, to check if it will let some Xbox-es go higher than 290mhz on NVCLK.

  10. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    1 hour ago, N64 freak said:

    The 5V rail on the PicoPSU is a little weak for the Xbox

    did you come to this conclusion after testing a 1.4ghz xbox motherboard?

    also, need to check, maybe there are different versions of picoPSU with more power.

    update:

    checked, there are different models of picoPSU, will buy a 250w and see how it performs, but it won't be soon.

  11. Theoretical Gpu Overclock

    in Hardware Mods

    Posted

    20 minutes ago, samspin said:

    "POKEPCI MEM_CNTRL, 200 POKE 0, 0xAAAAAAAA ACC = PEEK(0) IF ACC = 0xAAAAAAAA GOTO END POKEPCI MEM_CNTRL, 195 POKE 0, 0xAAAAAAAA ACC = PEEK(0) IF ACC = 0xAAAAAAAA GOTO END POKEPCI MEM_CNTRL, 190"

    wow, that's some nice info. ATM, have to try raising voltage on RAM chips, as Ryzee suggested and also search for QC40 variant of the RAM as they are described to have top speed clocked at 250mhz.

  13. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    3 hours ago, samspin said:

    overclocking the FSB also overclocks the RAM. The quality of the RAM varies significantly in all Xboxes

    Is there any info regarding the quality of RAM chips in Xbox?
    I doubt N64Freak is replacing all the RAM chips when doing the upgrade. Even the way soldering looks on his works is noticeable, and points to - he was just adding RAM chips, and not replacing all of them. If you have a board from him, you should see that the additional chips have thinner soldering than the stock ones.

    A guy on discord told me he overclocked his stock 733mhz CPU to 870mhz (158fsb), and the NVCLK to 315mhz, the board is a 1.2. So that are good news, meaning not only 1.0 Xbox-es can handle this high overclocking, atm would be nice to understand what is actually the reason why some Xbox-es can't go high enough to reach fsb 158, nvclk 315.

     

    BTW, the cooling power supply is external in my case, no idea if it means much for this mod.

  15. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    2 hours ago, y0urh34d said:

     VC at 720p

    can you please upload the xbe somewhere? and what version is that?

    regarding the NVCLK speed, I started to see more improvements after 290mhz, before that, they were not really noticeable.

  16. Theoretical Gpu Overclock

    in Hardware Mods

    Posted

    On 3/25/2019 at 3:06 PM, y0urh34d said:

    So far the only thing I tested was Goldeneye on N64 emulator and the game so far at the start, there is almost no performance hit with 720p with the overclocks. I'll test some more stuff if anybody wants to know the performance of any other emulators or whatever. Maybe I'll test my other 1.4ghz xbox which is a v1.4 with that different gpu and see what I'd get.

    bud, any updates?

  19. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    top stable speeds for me atm are:

    315mhz GPU, 155mhz FSB

    Be cautious with this, and always flash it to a modchip, in case something goes wrong, you will be able to remove the modchip and boot off the TSOP.

     

    Last times XblastOS.xbe refuses to boot, after disconnecting the DVD drive, it started to boot again. XblastOS is tricky, not always booting and not always flashing.I have 2 aladdin modchips, one always untouched with IND bios, other for different stuff like this, so if with second modchip XblastOS.xbe is not booting (which happened to me a lot of times), I boot with the healthy untouched aladdin, launch XblastOS.xbe, go to flash from HDD, change carefully the modchip to the problematic one, then hit flash and it goes. This way it worked.

  23. Theoretical Gpu Overclock

    in Hardware Mods

    Posted · Edited by neighbor

    1 hour ago, y0urh34d said:

    With the overclocking tool, I managed to get 280mhz on the gpu and 158.3mhz fsb which is 1660mhz on the cpu (I did both overclocks at the same time). I couldn't push any higher on the cpu and I know the gpu at 290, the xbox freezes up on boot. My xbox is a v1.1 with the x3cp mod with the 1.4ghz cpu replacement and the 128mb ram upgrade. 

    So far the only thing I tested was Goldeneye on N64 emulator and the game so far at the start, there is almost no performance hit with 720p with the overclocks. I'll test some more stuff if anybody wants to know the performance of any other emulators or whatever. Maybe I'll test my other 1.4ghz xbox which is a v1.4 with that different gpu and see what I'd get.

    nice, did you add more cooling to the board?
    did you patch the xbe for new 1660mhz speed?

    did you try to watch 720p mp4 videos?

    did you try GTAIII in 720p with the trails effect off?
     

    • Like 1

  25. Theoretical Gpu Overclock

    in Hardware Mods

    Posted

    28 minutes ago, KaosEngineer said:

    nice, no voltage regulator changes.  

    I've clocked the GPU to 315mhz (stock 233mhz), there is noticeable increase in fps on Halo CE in 720p, but still a lot of explosions or too much reflections are making framedrops. So maybe voltage increase will help the GPU. Also do you know if Xbox supports K4D263238F-QC40 chips, because their top speed is 250mhz compared to 200mhz of K4D263238F-QC50

    • Like 1

Board Life Status


Board startup date: April 23, 2017 12:45:48
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

  I accept