Uploaded October 2025 | Updated September 2026, 2 weeks ago
This video is brought to you by PCBWay #sponsored
I have this GeForce4 MX 440 in my collection. It is equipped with 64 MB of onboard video memory. Unfortunately, the four memory chips limit the data bus to 64 bits only. In this video, I will try to upgrade the memory and hopefully unlock the 128 bit data bus.
Phil's video:
"One of Nvidia's most Controversial GPU": youtube.com/watch?v=Jbd1wPmx65w
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▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬
Visit my website to find affiliate links to most of the tools and products I use
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 GeForce4 MX 440
02:47 A Look at Memory Chips
04:10 PCBWay
04:52 Assessing the Situation
05:50 Looking for the Address Line A12
07:32 Why A12 is Important
08:39 Moving SMD Components
13:18 Moving Memory Chips
14:47 Testing the Card
17:30 Adding Pull-Down Resistors
21:00 Looking for 128-bit Data Bus
22:33 3DMark 2001 SE Pro
23:39 Side-By-Side Benchmarks
26:43 I used the wrong Platform
This video is brought to you by PCBWay #sponsored
I have this GeForce4 MX 440 in my collection. It is equipped with 64 MB of onboard video memory. Unfortunately, the four memory chips limit the data bus to 64 bits only. In this video, I will try to upgrade the memory and hopefully unlock the 128 bit data bus.
Phil's video:
"One of Nvidia's most Controversial GPU": youtube.com/watch?v=Jbd1wPmx65w
▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Sponsored by PCBWay: 🔸pcbway.com/g/lF253I
PCBWay provides full feature custom PCB prototyping services, 3D printing, and much more. Check them out using my referral link above and get a 5 USD welcome bonus when you sign up as a new customer!
My contributions to the Community Project Space at PCBWay:
🔸pcbway.com/project/member/?bmbno=0140E301-54A5-47
▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬
Visit my website to find affiliate links to most of the tools and products I use
🔸bitsundbolts.com/affiliate
Thank you for your support!
▬▬▬▬ *Support Bits und Bolts* ▬▬▬▬▬▬▬▬▬▬
Patreon: 🔸patreon.com/BitsUndBolts
Bitcoin: bc1q2dvf9flf78lam33qjj9w9xgvfxdgre7g9x3rmw
Twitter/X: 🔸twitter.com/BitsUndBolts
Facebook: 🔸facebook.com/bitsundbolts
Website: 🔸bitsundbolts.com
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 GeForce4 MX 440
02:47 A Look at Memory Chips
04:10 PCBWay
04:52 Assessing the Situation
05:50 Looking for the Address Line A12
07:32 Why A12 is Important
08:39 Moving SMD Components
13:18 Moving Memory Chips
14:47 Testing the Card
17:30 Adding Pull-Down Resistors
21:00 Looking for 128-bit Data Bus
22:33 3DMark 2001 SE Pro
23:39 Side-By-Side Benchmarks
26:43 I used the wrong Platform

