Official AMD Ryzen Benchmarks, Reviews, Prices, and Discussion

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LTC8K6

Lifer
Mar 10, 2004
28,520
1,576
126
If XFR is indeed unlimited and only based on sensors data this means that the silicon is at its limits when clocking to 4.1GHz. In this case would be better if XFR were limited to 100MHz boost so we could hope for better manual overclocking...
If it's unlimited, then it does seem odd that it only did +100mhz with good liquid cooling.
Would you buy a good liquid cooler for +100mhz?
 
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thigobr

Senior member
Sep 4, 2016
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I would imagine XFR isn't so agressive...
Anyway, 4.1GHz should not be too far from max freq. for these initial batches and ambient cooling temps.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,576
126
I would imagine XFR isn't so agressive...
I suppose so.
However, when they went for a manual all core overclock at the AMD demo, they only went for 4.1 and we don't know what happened since the feed went down.
 

PhonakV30

Senior member
Oct 26, 2009
987
378
136
XFR with auto adjustable voltage ? If XFR is unlimited therefore you need to adjust voltage to maintenance stability of CPU, So XFR Is not unlimited .also maximum clock with XFR was 4.1Ghz , that means 4.2Ghz on all CPUs are not possible due to different silicon lottery
 

unseenmorbidity

Golden Member
Nov 27, 2016
1,395
967
96
I'd imagine it is, considering what happened to feed when they set all cores to 4.1Ghz manually /sarcasm

Damn, never thought that demo was so fun. Can only hope rest of evening was as fun and reviewers won't shy away from some potshots.
Sounds more like they just slapped it to 4.1 without any prior tinkering. Obviously they aren't going to hit a high stable OC in one go. Takes trial and error.
 

lolfail9001

Golden Member
Sep 9, 2016
1,056
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Sounds more like they just slapped it to 4.1 without any prior tinkering. Obviously they aren't going to hit a high stable OC in one go. Takes trial and error.
When i have seen them doing the slapping like that the first thought i have had was: "Bbbbbut voltages?".
sandbagged
We'll see in 3 days. But i would be surprised if you can push 1800X to 4.1 without any voltage adjustments and luck.
 

french toast

Senior member
Feb 22, 2017
988
825
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XFR with auto adjustable voltage ? If XFR is unlimited therefore you need to adjust voltage to maintenance stability of CPU, So XFR Is not unlimited .also maximum clock with XFR was 4.1Ghz , that means 4.2Ghz on all CPUs are not possible due to different silicon lottery
Scan already do pre overclocked systems @4.2ghz, that surely must not be the limit
 
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CatMerc

Golden Member
Jul 16, 2016
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I'd imagine it is, considering what happened to feed when they set all cores to 4.1Ghz manually /sarcasm

Damn, never thought that demo was so fun. Can only hope rest of evening was as fun and reviewers won't shy away from some potshots.
Would not surprise me if the FMax of one of the cores is higher than others, and the sensors could detect that, putting 4.1GHz on just that specific core.
 

Despoiler

Golden Member
Nov 10, 2007
1,968
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I think it's important to remember that XFR is an automatic chip supported feature. It's supported by AMD. As such it's going to be extremely conservative. AMD doesn't want to be on the hook for burnt up chips. If that is the case, I don't think it's reasonable to expect it to OC the chip as high as a manual overclock will. That being the case XFR overclocks do not indicate anything about silicon quality.
 

PhonakV30

Senior member
Oct 26, 2009
987
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Sorry im not overly hot on memory nomenclature, what does that mean exactly?

Command rate - is the delay (in clock cycles) between when chip select is asserted (i.e. the RAM is selected) and commands (i.e. ... The amount of time in cycles when the chip select is executed and the commands can be issued. The lower (1T) the faster the performance, but 2T is used to maintain system stability

atm , 3400Mhz 1T was not possible on Intel's CPU nore AMD (I haven't seen it , please notify me ). This is Highest clock that reported on 1T.