Synchr030/S: 256MB Accelerated SDRAM PDS Card for Mac SE/30 @JDW-
Synchr030/S: 256MB Accelerated SDRAM PDS Card for Mac SE/30  @JDW-
Uploaded March 2025 | Updated September 2026, 2 weeks ago
Incredibly innovative PDS Card gives your SE/30 a whopping 256MB RAM in System 7.x (32-bit addressing ON) and 128MB RAM in System 6.0.x or in System 7 with "24-bit addressing" — 8MB usable, the rest as a RAM disk. It's up to 2x faster than stock DRAM SIMMs.

🔎 *INDEX*
0:00 — Intro
5:34 — Installation
18:48 — Maxima RAM DISK
39:15 — Maxima CAVEATS
43:37 — Add-on Card COMPATIBILITY
52:38 — Pricing & COMPARISON
56:29 — Closing Thoughts

🛒 *THINGS TO BUY*
• Synchr030/S: bit.ly/3QHGmss
• MacEffects Clear Case (Mar. 2025 Kickstarter): bit.ly/4kt3n03

⚠️ Custom ROM SIMM is REQUIRED to use Synchr030/S, available from these vendors:
• Garrett's Workshop "GW4402B" (16MB): ebay.com/itm/256554602527
• BMOW "ROM-inator II" (4MB): bit.ly/4hC78yf
• CayMac Vintage (4MB): ko-fi.com/s/a21ef3a744
• CayMac Vintage (8MB): ko-fi.com/s/7dfe6adc8a
• Kero's Mac Mods "SMC ROM SIMM" (2MB): bit.ly/3EIdltZ
• SiliconInsider "PurpleROM" (2MB, Gold-plated!): bit.ly/3EGgkmG
• GGLabs "MACSIMM" (512K or 2MB): bit.ly/4hEQcap
• Programmer (to customize a bootable ROM SIMM): ko-fi.com/s/73f6ba84e8
📺 Can't decide? Watch my ROM SIMM Video: youtu.be/8eeXd0hVBMk
_(Using the stock SE/30 ROM limits RAM to 128MB, and RAM checks aren't disabled.)_

⚡UPGRADE your SE/30's Main Wiring Harness:
• Pre-crimped BLK 16AWG wire (2153401223, L=22.5cm): bit.ly/3XnigpC
• Pre-crimped RED 16AWG wire (2153402223, L=22.5cm): bit.ly/3Zx8ior

🏇Booster 2.0 (PDS) by ZigZagJoe: ebay.com/itm/335714932278
🏎️ Bolle's Recreations (inconsistent availability):
• DiiMO (PDS): tinyurl.com/2w3m8p9c
• P33 PowerCache (requires Adapter): tinyurl.com/3736ss2b
• CPU-socketed PowerCache: tinyurl.com/2v2p32d7
• Turbo040, Carrera040 & Adapters (NOT compatible with Synchr030): tinyurl.com/yn3w4mxz

DRAM mentioned in the video:
• SiliconInsider's 16MB SIMMs (Gold-plated): tinyurl.com/yck4ybmn
• CayMac's 16MB SIMMs w/LEDs: ko-fi.com/s/5903a3d04b
• CayMac's SIPP Article: tinyurl.com/32pwmehh

💾 *SOFTWARE*
• Synchr030/S Extension: tinyurl.com/3bdz7hv4
• Power Demo, to activate FPU LED (DL#1): tinyurl.com/yf3p3fdc
• Maxima RAM Disk (DL#3): bit.ly/4aZOLRj
• Photoshop 4.0: bit.ly/3Dq8uNH
• Canvas 3.5.6: bit.ly/4hdtWTP
• MS Word 5.1: bit.ly/4iqiFAU
• SimCity: bit.ly/41PAy6o
• Spectre Challenger game (DL#1): macintoshgarden.org/games/spectre
• Vette! game: macintoshgarden.org/games/vette
👉Here's Vette & Spectre in a convenient archive: bit.ly/3QDW1cl
• DOWNLOAD my Sync030 StartupScreen here: bit.ly/3DhhvJ3

📚 *REFERENCE*
• Synchr030/S User's Manual: ymkdevices.com/synchr030s/manual.htm
• How to Recap the SE/30 ANALOG Board: youtu.be/zr_Q4bGI_qY
• How to Recap the PSU (Sony): youtu.be/nSZ8QsNUxDM
• Modern PSU replacement for SE/30: youtu.be/_AvndWq_MSA
• MacSD REVIEW: youtu.be/zwz6qMC2ZE4
• MacEffects Clear Case REVIEW: youtu.be/-SuDIutxQTc
• BlueSCSI v2 slow in MacBench 3.0? This may help: tinyurl.com/43ksxnu2
• Black Dot in PowerCentral Control Panel: tinyurl.com/v8kky6aj
• YMK is working on a way to enable the P33's Cache: tinyurl.com/46xz43k3
• Carrera040 & Synchr030 are NOT compatible: tinyurl.com/2uuvfw4r
• Debian (Linux) will make use of all that RAM: eharmon.net/retro/macintosh/linux

🙇‍♂️ *SPECIAL THANKS* to Yianni of YMK Devices for answering my many questions!

🙏 *THANK YOU, Paypal Supporters!* (since my last video)
• Brian Gorham 🇺🇸 (🥇TOP repeat supporter)
• Mark B Newlon 🇺🇸 (monthly supporter)
• Philippe Astier 🇫🇷 (monthly supporter)
• Mauro Acciaccaferri 🇮🇹 (monthly supporter)
• Gavin Maxwell 🇦🇺 (monthly supporter)

🎵 *MUSIC CREDITS*
• Disco Metropolis by Vyra soundcloud.com/vyramusic/disco-metropolis
is under CC BY-SA 3.0 attribution license.

💰*HOW TO SUPPORT THIS CHANNEL*
paypal.me/supportJDW

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🎬 *MY VIDEOS*
youtube.com/user/JDW26/videos

#MARCHintosh #Synchr030 #Macintosh #JDW1
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Synchr030/S: 256MB Accelerated SDRAM PDS Card for Mac SE/30

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