![]()
Best raid card for mac pro 2010 mod#Below are some of the bits of information that lead to my current recommendation on the Pixlas Mod (which I will get to as well). The rabbit hole goes deep and there is still some room for speculation as Apple does not make certain information available to the public. Power supply rating, 12V line rating, traces in the board and wire gauge just to name a few. With this information available I’d say both claims, which is what the Pixlas Mod is largely based on, are debunked.Ī lot factors in to how much power a port can provide. We don’t know how big the traces for the 12V line to the PCIe auxiliary connectors are! The PCIe auxiliary ports get their 12V from traces inside the board. The traces that are visible on both sides of the board are both ground planes. I figured one was ground and one was 12V, this is not the case. On both sides of the board thick 15mm traces lead to and from the mini 6-pin connectors. Best raid card for mac pro 2010 pro#I took a Mac Pro 4,1 apart and lifted out the board. The max rating for the port is 9A so it doesn’t matter much but if we take the 7.99A then the total available power would be 288W.Ĭlaim 2: The traces in the Mac Pro’s logic board are too thin to have more power demanded than 75W Some say this is a display limit, others say this is the actual limit meaning Apple’s board design caps the current at a max of 8A. So what causes the Mac to shut down at 210W on that port? Not sure but it can definitely handle more than 75W.Īpplications such as Hardware Monitor and iStat Menus will show a max power draw of 7.99A on a PCIe auxiliary port. That’s quite a bit short of the 324W the connector should be able to do, 114W short to be exact. This has been proven by a few people now that have documented their tests. Draw more than 210W and the Mac will shut down. To my knowledge, no-one has ever squeezed more than 210W out of a mini 6-pin connector. ![]() Mind you, this connector and others like it (Molex 39-01-2060) are rated for 600V at 9A so 12V at 9A should be very much possible without any issues for these connectors (using the appropriate gauge wiring of course). This is simply going off of the datasheet. 108W * 3 pins = 324W total available power for a mini 6-pin connector.This leaves us with the following conclusion: In the Mac Pro 4,1/5,1, this third pin is connected and provides 12V. The standard for this connector is that only two 12V pins are connected and a third is optional. This connector is rated at 9 Amps per contact (pin). ![]() The datasheet for that connector can be found on the linked page. This is what you’ll find on the cable connecting your GPU to one of the mini 6-pin auxiliary power connectors on the board. Presenting the “ Molex 45559-0002” connector. This counterpart does have specs available online. ![]() Best raid card for mac pro 2010 full#But just like the mini-USB or mini-DVI, the mini 6-pin PCIe connector is just a smaller form factor of it’s full sized counterpart. connector housings’) has proven not possible for me. Here are my findings…Ĭlaim 1: The mini 6-pin connector can only provide up to 75W of powerįinding a spec sheet for the mini 6-pin (or ‘Molex Mini-Fit Jr. I’ve gathered all the relevant information and put the puzzle pieces together, along with anecdotal evidence from Mac Pro users in MacProUpgrade. I needed definitive proof (at least definitive for me) of these two claims so I decided to really dive into this. ![]() The traces in the Mac Pro’s logic board are too thin to have more power demanded than 75W. The mini 6-pin connector can only provide up to 75W of power.Ģ. A few things have bothered me about the reasons for recommending the Pixlas Mod.ġ. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |