Does using 2666 or 3000 mhrz ram make a difference?

[JayzSub]

2 minutes ago, Tristerin said:

I cant speak to the differences it would afford other than that I believe (Im no expert on this particular topic) the CL14 compared to 15 etc communicates faster.  Therefore if I am looking at Infinity Fabric for what it is, I would assume CL14 is much better than the others, but in measurements Im not sure.  Id say the frequency is much more important (and your getting that) so if your wallet can allow, then Id get the CL14 to get the best out of my CPU (again, if you can afford, if its out of budget Im positive the others will result in great gains as well)

I see and understand, thanks you guys have been a great help. 

[Zando_]

2 hours ago, Tristerin said:

I cant speak to the differences it would afford other than that I believe (Im no expert on this particular topic) the CL14 compared to 15 etc communicates faster.  Therefore if I am looking at Infinity Fabric for what it is, I would assume CL14 is much better than the others, but in measurements Im not sure.  Id say the frequency is much more important (and your getting that) so if your wallet can allow, then Id get the CL14 to get the best out of my CPU (again, if you can afford, if its out of budget Im positive the others will result in great gains as well)

IIRC CL15 3000Mhz is the same effective speed as CL16 3200Mhz, so CL14 3000 might be a tiny bit faster?

 

2 hours ago, Turtle Rig said:

I would rather have lower latency and downclocking the Mhz.  3200Mhz kits are usually 16 CL ,,,,,, I would rather downclock it to 2666 to 2800Mhz with CL 14.

That'd be silly, it would be slower than CL16 3200Mhz. 

[Turtle Rig]

24 minutes ago, Zando Bob said:

IIRC CL15 3000Mhz is the same effective speed as CL16 3200Mhz, so CL14 3000 might be a tiny bit faster?

 

That'd be silly, it would be slower than CL16 3200Mhz. 

Oh no kidding Zando Bob.  Thanks for clearing that up.

[Benjeh]

11 hours ago, Zando Bob said:

IIRC CL15 3000Mhz is the same effective speed as CL16 3200Mhz, so CL14 3000 might be a tiny bit faster?

 

That'd be silly, it would be slower than CL16 3200Mhz. 

How so? I don't understand how lowering the speed and one cl point is faster can you explain?

[Zando_]

7 hours ago, Benjeh said:

How so? I don't understand how lowering the speed and one cl point is faster can you explain?

From what I've read, the drop in latency from CL16 to CL15 makes up for the 200Mhz speed loss. Considering 3200Mhz CL16 and 3000Mhz CL15 are usually the same price peeps normally just go for the 3200Mhz stuff.

[Benjeh]

1 minute ago, Zando Bob said:

From what I've read, the drop in latency from CL16 to CL15 makes up for the 200Mhz speed loss. Considering 3200Mhz CL16 and 3000Mhz CL15 are usually the same price peeps normally just go for the 3200Mhz stuff.

if possible can you show where you have read this and with proof, because in my experience i've not found that to be true.

[Zando_]

1 hour ago, Benjeh said:

if possible can you show where you have read this and with proof, because in my experience i've not found that to be true.

Read about it when googling up the differences in actual speed between CL15 3000 and CL16 3200. 

 

And here’s a test I ran on my PC. Memtestx86 speedtest or something, first at 3200MHz CL16, next at 3000MHz CL15 using the XMP profiles for my 4x8GB kit of HyperX Predator RAM:

 

 

 

settings in BIOS:

[Crunchy Dragon]

On 4/26/2019 at 4:04 PM, Turtle Rig said:

Honestly I have researched this very same question for years.  From what I read from Intel side is the CPU can only handle certain ammount of information at certain speed so a 2133 and a 3200Mhz is irrelevant.  However I see people on LTT talking about how it makes a nice difference on AMD systems, so I can't argue that point and accept it.

Ryzen likes faster memory due to the way the processors are designed.

 

Every processor has its limit, it's a bit silly to say that "Intel CPUs can only handle a certain amount of information"; the same goes for AMD.

[Benjeh]

17 minutes ago, Zando Bob said:

Read about it when googling up the differences in actual speed between CL15 3000 and CL16 3200. 

 

And here’s a test I ran on my PC. Memtestx86 speedtest or something, first at 3200MHz CL16, next at 3000MHz CL15 using the XMP profiles for my 4x8GB kit of HyperX Predator RAM:

 

settings in BIOS:

 

 

Sorry not sure if its because i'm tired but i can't make sense of those results, it would be easier to use something like this.

[Zando_]

Just now, Benjeh said:

Sorry not sure if its because i'm tired but i can't make sense of those results, it would be easier to use something like this.

-snip-

Don't have AIDA 64 (trial version covers up most of the data), otherwise I'd have just used that.

[alatron978]

If you are going from ddr3 2666mhz to ddr4 3000mhz, you will probably see a decrease in performance due to the timings on the ddr3 2666mhz kit being superior.