Let’s be clear: The BIOS does not change resolution or texture filtering. That is the job of the emulator’s renderer (DirectX, Vulkan, OpenGL). When people claim SCPH-90001 “looks better,” what they mean is that it displays the PS2’s startup logo faster and renders the browser menu (the wavy cubes) without tearing.
However, because the 90001 BIOS is from the final hardware revision, it does correctly handle progressive scan flags over component video (via emulated outputs), whereas some very old BIOS versions default to interlaced only.
When users discuss the "BIOS" of the 90001 in the context of being "better new," the conversation often shifts toward homebrew and emulation.
The SCPH-90001 BIOS (commonly version 2.30) is highly stable. For users utilizing FreeMCBoot or soft-modding their consoles, the 90001 is a prime candidate. Because the hardware revision is late-stage, it has excellent compatibility with homebrew applications designed to run off a memory card.
However, it is important to note the trade-off: the 90001 removed the internal power supply brick (moving it external) and, more crucially for modders, Sony patched the ROM to block the "Datecode" exploits used on earlier models. While this makes hard-modding slightly more difficult, the console runs software cleanly and efficiently.
The SCPH-90001 represents the end of an era. By this point, Sony had fully streamlined the PS2’s hardware into a single-chip solution (the "PowerPC-like" combined EE+GS chip). The BIOS version in the 90001 is the most up-to-date—typically v2.30 or a late v2.20 variant.
Key differences include:
| Feature | SCPH-39001 (v1.20) | SCPH-90001 (v2.30) | |--------|-------------------|--------------------| | DVD region check bypass | Possible via mechacon glitch | Hardened – blocks most DVD-R swaps | | FMCB compatibility | Full | Blocked (needs Fortuna or OpenTuna) | | PS1 backwards compatibility | GTE timing accurate | Slightly altered (some games desync) | | Homebrew ELF loading | lenient | Stricter signature checks | | DVD video playback | Slower seek | Faster authenticated seek | | Emulator compatibility (PCSX2) | High | Minor timing bugs in IOP reset |
The SCPH-90001 (released in 2007) is considered the "best" model for casual users because it is the most modern, refined, and reliable version of the PlayStation 2 ps2 bios scph 90001 better new
. However, it is strictly worse for hobbyists who want to mod their console. Why the SCPH-90001 is "Better" (Newer Features)
Internal Power Supply: Unlike earlier "Slim" models that require a bulky external power brick, the 90001 has the power supply built into the console. You only need a simple figure-8 power cable to plug it into the wall.
Superior Reliability: As the final revision, it generally has the most durable laser and internal components. Users report it is the quietest model and least prone to common mechanical failures.
Physical Refinement: It features a redesigned exterior with a mix of matte and glossy finishes and more durable, flush-mounted buttons.
Faster Load Times: Speedrunners often prefer this model because it can load certain PS1 and PS2 titles faster than older revisions when using "Fast Disc Speed" settings. The "Worse" Aspect: Modding and Compatibility
BIOS Patch (Anti-Modding): Sony updated the BIOS (typically version 2.30 or higher) in late-production 90001 units (date codes 8C and 8D from 2008) to block Free McBoot (FMCB). While alternatives like FunTuna or OpenTuna exist, it is significantly harder to soft-mod than older models.
Reduced PS1 Compatibility: Like all models from the 75000 series onward, the 90001 lacks the original physical PS1 CPU. It uses a chip called "Deckard" to emulate the hardware, which causes minor glitches or complete incompatibility with approximately 50+ PS1 and early PS2 titles.
No Internal HDD Support: Unlike the original "Fat" models, you cannot install a hard drive for faster game loading; you are limited to discs or much slower USB/Network loading. Let’s be clear: The BIOS does not change
The PS2 Slim SCPH-90001 is often considered the "ultimate" official revision for casual players who value sleek design and reliability, though it presents specific challenges for enthusiasts interested in older softmods like Free McBoot. Hardware & Design Improvements
Integrated Power Supply: Unlike earlier Slim models (like the SCPH-70012
), the 90001 has the power brick built into the console. You only need a standard AC cable, making it more portable and clutter-free.
Updated Laser Reliability: Many users and reviewers from ResetEra and Reddit consider this model's optical laser to be the most reliable of the Slim series, with fewer failures than the 5000x or 7000x series.
Quiet Operation: It features a redesigned fan and internal cooling system that operates more quietly than previous revisions.
Visual Polish: The console has a more modern look, with a glossy strip extending across the left side and flush buttons on the front. BIOS & Performance Changes Faster PS1 Loading: Speedrunners often prefer the
because its BIOS (v2.30) supports "Fast Disc Speed" for PS1 titles, which notably reduces load times compared to the SCPH-75000 Compatibility Trade-offs:
PS1 Games: While it uses the "Deckard" IOP chip which is generally efficient, it lacks the original PS1 CPU hardware found in the early SCPH-700xx However, because the 90001 BIOS is from the
models, leading to minor compatibility issues with a small handful of PS1 titles.
PS2 Games: Some games like Jak X may experience rare issues due to the unified chip architecture. Modding Considerations The biggest "downside" of the
BIOS is that Sony patched the memory card exploit used by Free McBoot (FMCB) in units manufactured after late 2008 (indicated by date code 8C or later). Alternative Mods: If you have a later
, you can still use alternatives like FunTuna or Fortuna to run homebrew and backups. Modchips: The
is a popular choice for installing physical modchips like the Modbo 5 due to its small PCB. The Verdict Choose the SCPH-90001
if: You want the most reliable, "newest" feeling console for playing original discs, appreciate a built-in power supply, or are a speedrunner.
Skip it if: You want easy, plug-and-play Free McBoot compatibility or need to install an internal hard drive (which is only possible on "Phat" models).
Are you planning to use the console for original discs or are you looking to set up homebrew and digital backups?
Which Slim model is better: SCPH-70012 or SCPH-90001? : r/ps2