Recent content by Hunter259

Virtually identical performance to the dual drive with a third drive. Doing a 16GB write at 256K blocks with DD gave ~330MB/s writes and 1.2GB/s reads but that read is probably a caching situation.

Well I do have another so we can have some fun with this theory tomorrow/when I get to it ;)

I think the highest I got was about 515MB/s. I agree on spec they should be able to get more. These are SM951 which should with ease hit the PCIe 1 4x limit of ~1GB/s. Makes me think it is an issue with the Leopard AHCI driver (of which the Snow Leopard one isn't working without a kernel panic).

Had to break out the G5 Quad with RAID 0 PCIe AHCI SSDs. A single SSD isn't much slower than two so I'm not sure it's worth me putting a third in. I would have to take about my fx 4500 to fit it.

Interesting. I still have yet to fix my 3400c but I just figured the battery was completely shot because I also tried running the original firmware but the 5300c just acted as if it wasn't there.

You can either get a super cheap SIL card that, hopefully, has a large enough ROM to do the following https://68kmla.org/bb/index.php?threads/silicon-image-sil3112-flashing-easier-way-using-flashrom.7013/ Or one the preflashed ones on eBay for a little more

Perhaps the controller is on the way out? A cheap PCI SATA card should actually preform better if you have the open slots to support it.

You are correct. I couldn't find anything online about it so I wanted to make sure before I went prying on it. Thanks!

Is it possible to remove this coin shim that sits on top of the G3 die? It moves freely on top so whatever paste was there is long gone now.

While I wouldn't guarantee it, they do seem to be compatible on the surface. Hopefully someone else can confirm.

I saw that too but when they take the 3400 board out you can see it matches mine and the datasheet (https://www.datasheetcatalog.com/datasheets_pdf/K/M/4/1/KM416V254DJ-6.shtml) reports them as 256k x 16bit for 1MB of vram. 800x600 at 16bit color just barely fits in that frame buffer.

Here's a front and back shot of the 3400c. Very very similar layout.

Mac Gurus and Low End Mac report the 3400c as having 1MB and based on the board layout that makes sense. To say I'm a bit confused would be an understatement. The 3400c uses different pin spacing from the kanga so it's unlikely to be able to use them.

According to the datasheet you have 2MB. 256K x 16 is in words not bytes. Double the 256 to get the byte total. Unless I'm mistaken. https://www.versalogic.com/wp-content/themes/vsl-new/assets/resources/support/pdf/65550.pdf

I'm now questioning my own repair on a 3400c. It has two 256K x 16 chips next to it's 65550. Does the 65550 have it's own internal memory?