512 kB 70ns VRAM SIMM for Macintosh
Designed by Garrett's Workshop in United States of AmericaNo shipping info available.
Set destination country to see options
Shipping to starts at
Free shipping is available to !
Ships from
This item does not ship to .
More Info
Sign up to get notified when this product is back in stock!
GW4405A is a 68-pin VRAM SIMM which provides Apple Macintosh computers with 512 kB of VRAM. High-Quality PCB GW4405A is built with an ENIG gold-plated, 4-layer PCB, and only new parts are used to bui…
Read More…GW4405A is a 68-pin VRAM SIMM which provides Apple Macintosh computers with 512 kB of VRAM.
GW4405A is built with an ENIG gold-plated, 4-layer PCB, and only new parts are used to build the VRAM SIMMs. All units are tested extensively before shipment, and all SIMMs conform to 80 ns timing or better, ensuring compatibility with all Macintosh models which support 68-pin VRAM SIMMs.
GW4405A features solid power and ground planes. Particular attention was paid to signal integrity, ensuring reliable performance on the fastest machines. The address bus traces are run as asymmetric striplines shielded inside the SIMM PCB, reducing interference generated by large VRAM SIMM arrays such as on the Quadra 700. Ample separation is provided between the DQ and SDQ buses routed on the front-side of the board. Particular attention was paid to the edge-sensitive RAS, CAS, and SCLK signals. These are optimized for minimum length, with large spacing between these edge-sensitive signals and all other signals and buses.
GW4405A's design is fully open-source. The schematics and board layouts are all freely available for commercial and noncommercial use. To download the design files, visit the Garrett's Workshop GitHub page: https://github.com/garrettsworkshop
GW4405A is always built with 80ns or faster VRAM chips, ensuring compatibility with all Macintosh models. We also have 70ns SIMMs available for overlocking purposes.
On machines which only call for 256 kB VRAM SIMMs, 512 kB SIMMs are supported, but only 256 kB of the total 512 kB capacity can be used. However, do not mix VRAM SIMM sizes on machines which call for either 256 kB or 512 kB VRAM SIMMs. For example, the LC 575 requires either two 256 kB SIMMs or two 512 kB SIMMs. Do not mix sizes in this machine.
No country selected, please select your country to see shipping options.
No rates are available for shipping to .
Enter your email address if you'd like to be notified when GW4405A -- 512 kB 68-pin VRAM SIMM for Macintosh can be shipped to you:
Thanks! We'll let you know when the seller adds shipping rates for your country.
Shipping Rate | Tracked | Ships From | First Item | Additional Items |
---|---|---|---|---|
:
|
Quantity | Price |
---|---|
1 | $23.00 |
2 | $21.00 |
3 | $20.00 |
4+ | $19.00 |
No shipping info available.
Set destination country to see options
Shipping to starts at
Free shipping is available to !
Ships from
This item does not ship to .
More Info
Sign up to get notified when this product is back in stock!
powell, OH, United States of America
Ships from United States of America.
25 Reviews | 498 Orders
$42.00
Free Shipping!
$42.00
Free Shipping!
$42.00
Free Shipping!
$42.00
Free Shipping!
$30.00
Free Shipping!
$35.00
Free Shipping!
$30.00
Free Shipping!
$25.00
Free Shipping!
$38.00
Free Shipping!
$7.00
Free Shipping!
$3.00
Free Shipping!
$37.00
Free Shipping!
By clicking Register, you confirm that you accept our Terms & Conditions
We recognize our top users by making them a Tindarian. Tindarians have access to secret & unreleased features.
We look for the most active & best members of the Tindie community, and invite them to join. There isn't a selection process or form to fill out. The only way to become a Tindarian is by being a nice & active member of the Tindie community!