JDW | Spicy O'Clock: 68040 Macintosh Overclocking [1 of 2] @JDW- | Uploaded February 2022 | Updated October 2024, 3 hours ago.
See how to overclock an LC575 motherboard in a Macintosh Color Classic Mystic using Kay Koba's Spicy O'Clock. Fast VRAM & OS-CON capacitors required to reach the highest clock speeds. Works with an LC040 (no FPU) or full FPU 68040 CPU as long as the motherboard has an XC or MC 88916DW chip. This video is PART 1. I had to suddenly cut this video short due to an ongoing family medical emergency. When I have time to make a future PART 2 segment, it will show a full FPU 68040, heatsink, and even greater overclocking performance that will surprise you. (Part II video: youtu.be/E_ZH8crtYU0 )

🔎 INDEX
0:00 — Intro
1:14 — Spicy O'Clock Info
3:09 — Frequency Counter Kit
9:13 — Installation
14:30 — Frequency Selection
19:39 — Benchmarks
27:08 — High Overclocks
30:06 — Faster VRAM
35:39 — Serial Port Issues
37:03 — Why this video will be 2 parts

🛒 BUY
• Spicy O'Clock: bit.ly/3rTXzTG
• 60ns 512K VRAM (Mr. Fahrenheit): (no longer for sale as of 9/2024)
• 60ns 512K VRAM (Drake/BetterBit): bit.ly/3LTNoa3
• 70ns 512K VRAM (Silicon Insider): ebay.to/3oS9vDN
• Serial Cable (to make loop-back plugs for Snooper2): amzn.to/3znGeXn
See my post on TinkerDifferent for details: tinyurl.com/26se46jw
• Torx T15 with LONG neck (to open Mac): amzn.to/2ScAskx
• Hakko Soldering Station: amzn.to/3ArxBJ6
💁‍♂️TIP: Use 350°C & Leaded solder.
• Solder (Leaded Rosin Core 0.8mm): amzn.to/3GzJbVl
• Frequency Counter Kit: amzn.to/3ruhuZm
• Header & Jumper Kit: amzn.to/3tQoCi8
• Wire Kit: amzn.to/2ZaWOKi
• Nylon Spacer Kit: amzn.to/368bltF
• Velcro strips: amzn.to/3gBZnug
• Heat Shrink Tubing Kit: amzn.to/34Cwzzj
• 8x8cm Polarizing Film: amzn.to/3sHm0TU
• 45mm Aluminum Heatsinks (no tape): amzn.to/3sBse7u
• Thermal Tape (50mm wide): amzn.to/3IMevkw
• LR44 3pc Battery Case (PRAM batt. replacement): amzn.to/3pi30xe
• 64MB 60ns RAM (LC575 OK!): ebay.to/3rZjIjE

💵 NOTE: Your price on Amazon (US only) is the same even if you don't click the "amzn.to" Affiliate links above, but if you do click & purchase within 24 hours, Amazon may pay me a small commission on qualifying items in your Cart.

💾 SOFTWARE
• Clockometer 2.0.3 (DL#4): bit.ly/3uBMg4y
• MacBench 3: bit.ly/35TNhdN
• Speedometer 4.02: bit.ly/34Snqmd
• Norton Utilities 3.5.3 (System Info): bit.ly/33oW5aS
• Newton Keyboard Enabler (Modem port): bit.ly/3HTWH7t

📚 REFERENCE
• My Benchmark Results: bit.ly/3ho0TR9
• Intro to Spicy O'Clock: amba.to/3H66PJ7
• Manual for Spicy: bit.ly/3GWCXyu
• Main IC on Spicy (LTC1799): bit.ly/42BHzXs
• OS-CON Recap video: youtu.be/IOX7wmnoy4U
• Stephen Arsenault's CALCULATOR: stephen-arsenault.github.io
• Stephen Arsenault's Open Source VRAM design: bit.ly/3BlDSHC
• MC88916 datasheet: bit.ly/3SCIRxQ
• XC/MC88916DW variations: bit.ly/3LfoocI
• 68040 Mask info (scroll to "Masks" section): bit.ly/3oehISp
• 68kMLA thread about MASKS: bit.ly/3GjlYX1
• TinkerDifferent thread about remarked/fake CPUs: bit.ly/3JtOiIb
• More 68040 Mask Info: bit.ly/3ottjNn
• Frequency Counter SCHEMATIC & Review: bit.ly/34qXWMV
• Frequency Counter MENUS described on creator's website: bit.ly/3sszT8a

🙏 MY SINCERE THANKS to the following Paypal contributors in Feb. 2022:
• Anonymous Donor #1
• Anonymous Donor #2 (two-time contributor)
• JCS from Chicago
• Joe Williams
• Mauro Acciaccaferri (monthly supporter)
• Stuart Ramdeen

📺 Please SUBSCRIBE:
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🎬 MY VIDEOS
youtube.com/user/JDW26/videos

MARCHintosh Event Logo concept & design by Javier Rivera | YouTube: youtube.com/c/JavMaster | Twitter: @javmast3r

#MARCHintosh #ColorClassic #Overclocking #JDW