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post #891 of 1994
Quote:
Originally Posted by chew* View Post

I doubt it.

Its directly ref clock related...ref clock 120 = lose 2 features that are selling points. Bluetooth/wifi drops. It comes and goes depending on what ref clock your at.

Im using a usb wifi now that works with ref clock since my little oc lab room is no longer hardwired for internet.
According to your posts, I'm guessing you've only worked with 1 Taichi board?
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post #892 of 1994
Quote:
Originally Posted by DADDYDC650 View Post

According to your posts, I'm guessing you've only worked with 1 Taichi board?

Well im not made of money so yah....but its not randomly dropping like a bad component...it works fine 100 ref clock and various other ref clock settings.

Others it just drops as if it never existed. 120 is one of those points.

Some devices are just not fond of pci clocks...this is common knowledge.
Edited by chew* - 4/11/17 at 2:37am
post #893 of 1994
Quote:
Originally Posted by chew* View Post

Well im not made of money so yah....but its not randomly dropping like a bad component...it works fine 100 ref clock and various other ref clock settings.

Others it just drops as if it never existed. 120 is one of those points.

Some devices are just not fond of pci clocks...this is common knowledge.
So if it's common knowledge that messing with the bus speed of the processor could cause issues with some components, why would reviewers knock off points in their reviews? Perhaps if other boards featured built in WiFi/BT, they would also run into the same occurrence.
Edited by DADDYDC650 - 4/11/17 at 2:45am
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post #894 of 1994
Quote:
Originally Posted by DADDYDC650 View Post

So if it's common knowledge that messing with the bus speed of the processor could cause issues with some components, why would reviewers knock off points in their reviews? Perhaps if other boards featured built in WiFi/BT, they would also run into the same occurrence.

Could be a bios bug...

Could be choice of component.

A usb driven wifi works fine....so once again component choice...

I did not build a ref clock board they did...

If you know of an issue 1 pick a component that tolerates it....or...dont install the feature...
post #895 of 1994
Quote:
Originally Posted by chew* View Post

Could be a bios bug...

Could be choice of component.

A usb driven wifi works fine....so once again component choice...

I did not build a ref clock board they did...

If you know of an issue 1 pick a component that tolerates it....or...dont install the feature...
Feature has always been YMMV. I'm thankful they included the WiFi/BT. Perhaps other Taichi boards bus speeds can be pushed further. Could be pushed further with a BIOS update. Be nice if others with a Taichi could confirm WiFi/BT issues with certain bus speeds. I won't be around my PC for a couple of days.
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post #896 of 1994
Bios updates im sure can get it better. 1.6->1.94 was a gain...

120 is already pushing it for 24/7 rigs imo.

Benching sure but at the end of the day 24/7 matters most.
post #897 of 1994
http://www.tweaktown.com/reviews/8132/msi-x370-krait-gaming-motherboard-review/index3.html
Quote:
The VRM is in an 8+2 phase configuration. The PWM controller is the Richtek RT8894A offers 4+2 phase operation, with three integrated drivers on the 4 phase channel. Richtek is using the PWM in 4+1 phase mode and doubling the phases by doubling the number of components on each driver. The three integrated drivers are supplemented by one RT9624F for the main four CPU phases. Another RT9624A is used for the SOC phase.

High and low-side MOSFETs are Nikos PK616BA and PK632BA PowerPAK MOSFETs. The memory VRM is controlled by a Richtek RT8125E single-phase PWM controller with integrated driver. The memory VRM uses double the number of MOSFETs for the single phase, and should be enough for four DDR4 DIMMs.



http://www.tweaktown.com/reviews/8135/asrock-fatal1ty-x370-gaming-k4-motherboard-review/index3.html
Quote:
The VRM on the motherboard is in an 8+4 phase configuration resulting from the doubling of 4+2 phases. The International Rectifier IR35201 offers 8+0, 7+1, and 6+2 PWM channel rail modes, and ASRock is using the 6+2 mode in a 4+2 phase configuration. The tried and true PWM is matched up with three doubler/dual driver IR3598 chips, but they aren't being used as doublers. Rather they are used as dual drivers since the IR3598 can take in two PWM channels and offer two driver outputs.


The CPU Core gets two IR3598, and the SOC rail gets one. The output from each dual driver is connected to two sets of power stage components; this method of doubling just adds an extra set of power stage components. The method used here improves full load performance, but it's that great for light-load efficiency. Anyways, the high and low side MOSFETs are the NIKOS PK618B and PZ0903BK PowerPAKs. They seem to get the job done fine. The motherboard does use 12K polymer solid capacitors.

A single Richtek RT8120D single phase PWM with integrated driver outputs to two phases using the same doubling method as the CPU VRM and the same power stage and output filter components.

seems he got the cheaper one with PZ0903BK

Apparently the heatsink or doubling method must be better than that of the Krait Gaming becuase it is 7 - 8 degrees Celsius cooler under load

http://www.tweaktown.com/reviews/8137/biostar-x370gt7-motherboard-review/index3.html
Quote:
That is an expensive VRM; it uses all International Rectifier control and power stage hardware. It starts off with the fully digital IR35201 working in 6+2 phase mode. Four of the six main phases are routed to four IR3599 doublers, which then output to two IR3555.


The IR3555 are International Rectifier's second-generation of 60A fully integrated power stages. They are some of the highest rated power stages on the market. I don't know much about the inductors, but the capacitors are rated 5K. The SOC rail gets two PWM channels, which are then routed to two IR3599, and then to four IR3555M.

An Anpec APW7120 single phase PWM with driver output to two Sinopower SM4377 PowerPAK MOSFETs for a single phase memory VRM.

Just confirms what we knew
Edited by AlphaC - 4/14/17 at 9:59am
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post #898 of 1994
Quote:
Originally Posted by AlphaC View Post

http://www.tweaktown.com/reviews/8132/msi-x370-krait-gaming-motherboard-review/index3.html
Quote:
The VRM is in an 8+2 phase configuration. The PWM controller is the Richtek RT8894A offers 4+2 phase operation, with three integrated drivers on the 4 phase channel. Richtek is using the PWM in 4+1 phase mode and doubling the phases by doubling the number of components on each driver. The three integrated drivers are supplemented by one RT9624F for the main four CPU phases. Another RT9624A is used for the SOC phase.

High and low-side MOSFETs are Nikos PK616BA and PK632BA PowerPAK MOSFETs. The memory VRM is controlled by a Richtek RT8125E single-phase PWM controller with integrated driver. The memory VRM uses double the number of MOSFETs for the single phase, and should be enough for four DDR4 DIMMs.



http://www.tweaktown.com/reviews/8135/asrock-fatal1ty-x370-gaming-k4-motherboard-review/index3.html
Quote:
The VRM on the motherboard is in an 8+4 phase configuration resulting from the doubling of 4+2 phases. The International Rectifier IR35201 offers 8+0, 7+1, and 6+2 PWM channel rail modes, and ASRock is using the 6+2 mode in a 4+2 phase configuration. The tried and true PWM is matched up with three doubler/dual driver IR3598 chips, but they aren't being used as doublers. Rather they are used as dual drivers since the IR3598 can take in two PWM channels and offer two driver outputs.


The CPU Core gets two IR3598, and the SOC rail gets one. The output from each dual driver is connected to two sets of power stage components; this method of doubling just adds an extra set of power stage components. The method used here improves full load performance, but it's that great for light-load efficiency. Anyways, the high and low side MOSFETs are the NIKOS PK618B and PZ0903BK PowerPAKs. They seem to get the job done fine. The motherboard does use 12K polymer solid capacitors.

A single Richtek RT8120D single phase PWM with integrated driver outputs to two phases using the same doubling method as the CPU VRM and the same power stage and output filter components.

seems he got the cheaper one with PZ0903BK

Apparently the heatsink or doubling method must be better than that of the Krait Gaming becuase it is 7 - 8 degrees Celsius cooler under load

http://www.tweaktown.com/reviews/8137/biostar-x370gt7-motherboard-review/index3.html
Quote:
That is an expensive VRM; it uses all International Rectifier control and power stage hardware. It starts off with the fully digital IR35201 working in 6+2 phase mode. Four of the six main phases are routed to four IR3599 doublers, which then output to two IR3555.


The IR3555 are International Rectifier's second-generation of 60A fully integrated power stages. They are some of the highest rated power stages on the market. I don't know much about the inductors, but the capacitors are rated 5K. The SOC rail gets two PWM channels, which are then routed to two IR3599, and then to four IR3555M.

An Anpec APW7120 single phase PWM with driver output to two Sinopower SM4377 PowerPAK MOSFETs for a single phase memory VRM.

Just confirms what we knew


are these retail boards?
or do these reviewers just swap the same boards for reviews?
post #899 of 1994
Not sure if he bought them but AFAIK AMD provided review kits did not have those 3 boards.

If I remember correctly Sin usually sells the midrange non-OC boards for a discount after reviewing them.
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post #900 of 1994
Quote:
Originally Posted by AlphaC View Post

Not sure if he bought them but AFAIK AMD provided review kits did not have those 3 boards.

If I remember correctly Sin usually sells the midrange non-OC boards for a discount after reviewing them.


right, but who actually buys them? AMD didn't provide - do a certain # of boards get swapped, and the reason some reviews are near the end of the chain, is they sell/giveaway them?
I guess I am confused - some reviewers state "I got this from Company X - it was NIB" others; it could be the same hardware that's been abused by 14 reviewers, and is pre-release anyway.

only reason I say this - is my boards were supposed to have the same VRM, but don't. and this is only the 2nd/3rd time I've seen proof.
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