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Intel Core i7-5775C and i5-5675C Hit Retail Channel in Early June

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EarthDog

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Z97 does, yes. For some boards it will take a bios update.

There is literally no point to update to Broadwell from a 4790K though.
 
peche

peche

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Benchmark Scores well I've fried a 775' P4 12 years ago, that counts?
EarthDog said:
There is literally no point to update to Broadwell from a 4790K though.
Click to expand...
4790K is one of the bravest processors as far as benchs and tests have shown... compared to non -E plataforms...
 
BorisDG

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Yes, but Broadwell 5775C is better. In gaming and tests clock for clock is up. Even Skylake is worse at times. But yes... if you have 4790K is absolutely no point to buy it. I came from G3258 and it's a beast. It's a pity that it's really hard to find and it's expensive, but It's a neat processor.
 
T

twomacaque

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EarthDog said:
Z97 does, yes. For some boards it will take a bios update.

There is literally no point to update to Broadwell from a 4790K though.
Click to expand...


If it boils down to the MEI and the microcode, I could update those, no problem. Is there anything else getting in the way?
 
TheHunter

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Well I flashed my Z87 with IMEI 9.1 for Broadwell (@ Asus site, found by Z97 mobos), it worked but it made bugged blck clock for my 4770K,..
It got pinned to 100.96MHz and windows saw it as 101MHz, also sometimes it would bsod by windows logon (bsod 0x124) since it now raised cpu freq. a bit, e.g. 4.6GHz >>> 4.64GHz.

This clock bug appeared as soon as I enabled XMP, with it off it would function normally and set it to 100MHz.



Also first time when I flashed this IMEI I got some strange prompt about tunderbolt and not enough UEFI memory or something.. It went away after another hardreset/restore UEFI to default..

So I guess if I had Broadwell cpu and used that IMEI it should theoretically work, maybe this IMEI is really only Broadwell blck specific.

btw PCH diagram is the same for both Z87 & Z97, that's why intel ceo said that what he said, but now I see its mostly for marketing and why they left old system out, but then again slight delay would make more sense, not left it out entirely..

*corp
intel-skylake-platform-details1-635x445(1).jpg



But careful with this IMEI firmware update, I almost thought I bricked my mobo bios, couldn't flash back to old 9.0, after some 2-3hr panic I finally tested Asus flashback and that worked as intended. Got a bit lucky my mobo didn't have write protected IMEI fw.
 
Last edited:
T

twomacaque

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TheHunter said:
Well I flashed my Z87 with IMEI 9.1 for Broadwell (@ Asus site, found by Z97 mobos), it worked but it made bugged blck clock for my 4770K,..
It got pinned to 100.96MHz and windows saw it as 101MHz, also sometimes it would bsod by windows logon (bsod 0x124) since it now raised cpu freq. a bit, e.g. 4.6GHz >>> 4.64GHz.

This clock bug appeared as soon as I enabled XMP, with it off it would function normally and set it to 100MHz.



Also first time when I flashed this IMEI I got some strange prompt about tunderbolt and not enough UEFI memory or something.. It went away after another hardreset/restore UEFI to default..

So I guess if I had Broadwell cpu and used that IMEI it should theoretically work, maybe this IMEI is really only Broadwell blck specific.

But careful with this IMEI firmware update, I almost thought I bricked my mobo bios, couldn't flash back to old 9.0, after some 2-3hr panic I finally tested Asus flashback and that worked as intended. Got a bit lucky my mobo didn't have write protected IMEI fw.
Click to expand...

The 9.1 MEI firmware has a BCLK bug that does not only affect Broadwell chips. This is probably easy for Intel to solve.

It does not look like there is anything HARDWARE related that rules out Z87 compatibility.
 
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