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Question about ZIF CPU's
- Thread starter Haemoglobin
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They seem to come and go. At times you'll find a dozen listed, while at other times you won't find any.
FWIW, in my experience the Yikes! CPU works well in B&Ws. I've found them very buggy in beige G3s, but given that the Yikes! is basically a B&W without an ADB port and with a G4(it even IDs itself as a PowerMac G3) they do work well provided that you use a firmware flasher to actually let the G4 work in a B&W.
FWIW, in my experience the Yikes! CPU works well in B&Ws. I've found them very buggy in beige G3s, but given that the Yikes! is basically a B&W without an ADB port and with a G4(it even IDs itself as a PowerMac G3) they do work well provided that you use a firmware flasher to actually let the G4 work in a B&W.
I'm currently using a Sonnet G4 500mhz
I'm aware of the bus speed penalty, but want to look at upgrade routes.
I'm aware of the bus speed penalty, but want to look at upgrade routes.
The ones over ~500mhz come up infrequently enough that they are usually noteworthy when they do.
If you want more than 500mhz, you can always try OCing a Yikes!. If you can, grab a Yikes! heatsink as it's a lot better than anything put on the B&Ws. I'm not sure how radically that CPU will handle being OCed, and of course you do lose the L3 cache of the big Sonnet 7450 ZIFs.
BTW, I run a 500mhz Sonnet in my AIO, and I've been super happy with how fast and stable it's been. I had a Yikes! CPU in it prior to that and it was a nightmare.
If you want more than 500mhz, you can always try OCing a Yikes!. If you can, grab a Yikes! heatsink as it's a lot better than anything put on the B&Ws. I'm not sure how radically that CPU will handle being OCed, and of course you do lose the L3 cache of the big Sonnet 7450 ZIFs.
BTW, I run a 500mhz Sonnet in my AIO, and I've been super happy with how fast and stable it's been. I had a Yikes! CPU in it prior to that and it was a nightmare.
So what exactly am I looking for? I know of Yikes, but I thought that was a model of powermac not a CPU. So it sounds like I need educating lol
Yikes! is a model, but it was basically the B&W G3 in a graphite case and fitted with a G4 CPU in the ZIF socket(and no ADB port actually fitted). The CPUs from them tend to be cheap and available on Ebay, are pin compatible with the B&W(and beige CPUs) and at least in a B&W you can use them as a G4 upgrade to replace the G3 provided that you flash the B&W firmware to allow a G4.
Next to the CPU socket on a B&W, there's a jumper block that sets both the system bus speed and the CPU multiplier. The frequency is the system bus multiplied by the multiplier. On a B&W, the bus speed is 100mhz unless you have a good reason to change it. On a 400mhz, for example, the multiplier would be 4x. You can remove this jumper block and fit individual jumpers to change the multiplier value. This allows you to overclock the CPU fairly easily, provided that you don't go so high as to make it unstable.
Next to the CPU socket on a B&W, there's a jumper block that sets both the system bus speed and the CPU multiplier. The frequency is the system bus multiplied by the multiplier. On a B&W, the bus speed is 100mhz unless you have a good reason to change it. On a 400mhz, for example, the multiplier would be 4x. You can remove this jumper block and fit individual jumpers to change the multiplier value. This allows you to overclock the CPU fairly easily, provided that you don't go so high as to make it unstable.
I had a look on eBay and wasn't able to see any ZIF CPU's better than a G4 500mhz (I'm currently running a MAXpowr G4 500). I don't suppose anyone knows what the threshold is with G4's, before the bus speed takes a hit? I'm sure I read it was anything past 600mhz.
I'd really like to upgrade the B/W as far as I can, I'm already looking to flash a radeon card to replace the ATI Rage 16mb.
I'd really like to upgrade the B/W as far as I can, I'm already looking to flash a radeon card to replace the ATI Rage 16mb.
once you go past the 7410 CPU on G4 CPU upgrades your going to be forced to drop the bus speed down to 66Mhz
if you use a 750FX or 750GX G3 CPU upgrade then you can keep the bus speed at 100Mhz
but all these CPUs are VERY rare, only sonnet made the 700Mhz-1Ghz G4 ZIF upgrades and only PowerLogix made the 750FX/750GX upgrades
and you cant simply BGA swap and make your own such upgrades as the 7450-7455 and 750FX/750GX use their own pinout that is incompatible with the 750/7400/7410 that do share the same pinout
Well I guess there's only one response to that...Damn it! lol
Thanks for the info LightBulbFun, it's appreciated
Thanks for the info LightBulbFun, it's appreciated
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