Frequency vs latency

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martinpalenik

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Aug 7, 2014
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I have noticed there is a tradeoff between frequency and latency. The higher (better) the frequency the higher (worse) the latency. I reckon there are these types of latency compatible with my HP ProBook 4730s.

CL9 (9-9-9-24 @ 666 MHz)
CL8 (8-8-8-22 @ 609 MHz)
CL7 (7-7-7-20 @ 533 MHz)
CL6 (6-6-6-17 @ 457 MHz)
CL5 (5-5-5-14 @ 380 MHz)

My question is when to choose higher frequency and when to choose lower latency.

I want the very best performance possible (for a reasonable price) for my laptop. I want it to be more responsive, swifter and with faster boot time (I have SSD too). I use a lot of tabs in Firefox (approximately 300 tabs right now).
 
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photonboy
You're showing quite a difference in frequencies there. To oversimplify:

Higher Frequency is better.
Lower CAS is better.

Of the choices available the top two are the best, and quite frankly in the real-world virtually identical likely.

*HOWEVER:
As I look back over your question you mention you have 300 tabs threads open. That's your problem right there. It's a combination of System Memory and CPU usage, but basically you have far, far too many threads open. The way Windows and/or Firefox throttle processing and memory may make it appear like you have more memory or CPU processing power but that's your issue.

Depending on the site you can often expect slow-downs with only TEN demanding sites, but I'd definitely keep things below...
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InvalidError

InvalidError

Titan
Moderator
May 18, 2007
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The real measure for latency is absolute time in nanoseconds. The latency in cycles is merely time / period rounded up.

All those "different" timings translate to practically the same net latency: about 13ns.

Latency being the same, pick the one with the highest bandwidth.
 
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photonboy

photonboy

Titan
Jun 20, 2006
21,567
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85,015
You're showing quite a difference in frequencies there. To oversimplify:

Higher Frequency is better.
Lower CAS is better.

Of the choices available the top two are the best, and quite frankly in the real-world virtually identical likely.

*HOWEVER:
As I look back over your question you mention you have 300 tabs threads open. That's your problem right there. It's a combination of System Memory and CPU usage, but basically you have far, far too many threads open. The way Windows and/or Firefox throttle processing and memory may make it appear like you have more memory or CPU processing power but that's your issue.

Depending on the site you can often expect slow-downs with only TEN demanding sites, but I'd definitely keep things below THIRTY.

So ORGANIZE your bookmarks if you haven't then open and view them a few at a time like the rest of us without Quantum PC's run by a Cosmic Cube. If performance feel sluggish close most of them.
 
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