1 hour ago, michael1508 said:

I am running a i9-13900k

Thank you.

13 hours ago, IanHarrison said:

You have 2 units of RAM, each one is reported as 2800, so RAM total is 5600.

No, it has nothing to do with how many memory modules are in the PC. 

"DDR" stands for double data rate--the memory module doubles the clock speed internally, so a 2800MHz memory clock speed results in the memory cycling at double that, or 5600 MHz.

And "XMP" stands for extreme memory profile--it's the tested overclock profile the manufacturer has coded into the memory module.  Most DIMMs use RAM chips that are rated at lower speeds and the manufacturer overclocks them and sells the module rated at the higher, overclocked speed. 

5 hours ago, Bob Scott said:

And "XMP" stands for extreme memory profile--it's the tested overclock profile the manufacturer has coded into the memory module.  Most DIMMs use RAM chips that are rated at lower speeds and the manufacturer overclocks them and sells the module rated at the higher, overclocked speed. 

Two clarifications - first, XMP is Intel-only. In the AMD world, it's EXPO - but they are fundamentally the same concept.

Second, it's not that the RAM is getting "overclocked", the RAM is rated at the speed the manufacturer claims (if it doesn't perform at that speed, RMA it!). It's a separate spec in that there may be no JEDEC specification for RAM at these speeds. XMP and EXPO are RAM that operates at speeds that are not formally part of the specification, it's been the RAM vendor and the CPU manufacturer.

Cheers

If it`s an Intel Motherboard XMP will be greyed out if you don`t have match pairs of memory in the correct slots. it`s called dual channel and can double the speed. 

So I returned the 4070, as I did not see any improvement in FPS and I ordered a 4080.

Now it's getting weired. Still same FPS!

I didn't go for a flight yet; only checking FPS at the gate for now. But I expected to see a difference between the 4070 and the 4080, which is supposed to play in a different league.

What could it be, that my FPS all the time stay the same? (I've set FPS to unlocked and let other settings untouched , installed new driver and let P3D create a new cfg, just to ensure)

Thanks,

Michael

 

Edited December 16, 20232 yr by michael1508

15 hours ago, michael1508 said:

So I returned the 4070, as I did not see any improvement in FPS and I ordered a 4080.

Now it's getting weired. Still same FPS!

I didn't go for a flight yet; only checking FPS at the gate for now. But I expected to see a difference between the 4070 and the 4080, which is supposed to play in a different league.

What could it be, that my FPS all the time stay the same? (I've set FPS to unlocked and let other settings untouched , installed new driver and let P3D create a new cfg, just to ensure)

Thanks,

Michael

 

P3D still makes significant use of the CPU, so upgrading from an Nvidia 1080 card to a 40xx card is likely to improve the FPS displayed, but the difference between and 4070 to 4080 is likely negligible to non-existent.

On 12/13/2023 at 2:56 AM, G-RFRY said:

If it`s an Intel Motherboard XMP will be greyed out if you don`t have match pairs of memory in the correct slots. it`s called dual channel and can double the speed. 

Actually, dual channel increases the bandwidth, not the speed.  The memory's rated speed is the rate at which the clock cycles, and is related to how fast data requests can be retrieved from the DRAM.  Bandwidth measures how fast the data can be transferred from the memory to the CPU, and doubling the width of the bus (e.g. dual vs single channel) when transferring the data at any given clock speed will double the bandwidth.

On 12/17/2023 at 3:31 PM, stans said:

P3D still makes significant use of the CPU, so upgrading from an Nvidia 1080 card to a 40xx card is likely to improve the FPS displayed, but the difference between and 4070 to 4080 is likely negligible to non-existent.

but there is also no significant increase vs the 1080ti. And with my i9-13900k I do have a considerably strong CPU, I believe.

I have the feeling, that I do not fully leverage my hardware power. I was playing around with some affinity mask and job scheduler settings. Maybe I have to start all over with a clean p3d.cfg.

 

I know with FSX, after upgrading hardware it was almost a necessity to let FSX build a new cfg file.