PCIE Slot?

[AuraDesru]

I just moved my parts from a fractal core 1000 to a thermaltake v21 today with a new DH-15 cooler. My mobo is a Z97M PLUS with two PCIE slots. One of them is PCIe 3.0/2.0 x16 (x16 mode, gray). The other one that is farthest from the cpu is a PCIe 2.0 x16 (x4 mode, black). I was wondering whether my SC 1070 would perform differently in either slot.

[PorkishPig]

8 minutes ago, AuraDesru said:

I just moved my parts from a fractal core 1000 to a thermaltake v21 today with a new DH-15 cooler. My mobo is a Z97M PLUS with two PCIE slots. One of them is PCIe 3.0/2.0 x16 (x16 mode, gray). The other one that is farthest from the cpu is a PCIe 2.0 x16 (x4 mode, black). I was wondering whether my SC 1070 would perform differently in either slot.

3

See Damascus's post.

 

Edited August 5, 2017 by Homeless_Pineapple
Misread

[Jurrunio]

I wonder if the bottom slot still runs at PCIe 2.0 x4 bandwidth while the first slot is left empty.

[Damascus]

1 minute ago, Homeless_Pineapple said:

GPUs cannot be used in PCIe x4 slots, only the 16x.

Its physically x16 but it has x4 speeds.  Works fine, no performance degredation.

[PorkishPig]

Just now, Damascus said:

Its physically x16 but it has x4 speeds.  Works fine, no performance degredation.

Yeah, I just realized my mistake. I skimmed this thread a little too fast. Apologies.

[AuraDesru]

Today was really jumpy in terms of starting up. Moving everything to a new case and installing the cooler/newpsu made me get some stupid errors.

I think I did start up the screen putting the gpu in the pcie2.0x4 slot. Then I started getting issues of the display not turning on. then I had to reinstall the DDR3 ram sticks and try again. The only reason I'm asking this is because I hear that the noctua are better horizontal with the heatsink facing the exhaust fans.

[zMeul]

8 minutes ago, Damascus said:

Its physically x16 but it has x4 speeds.  Works fine, no performance degredation.

it will have some degradation

it's a 4x slot at PCIe gen 2 - that's a 2x at gen 3 

[AuraDesru]

Just now, zMeul said:

it will have some degradation

it's a 4x slot at PCIe gen 2 - that's a 2x at gen 3 

Should I just keep it in the PCIE 3.0 slot?

I'm all about performance so if it gives me some extra frames. I'll take it:^)

CPU is around 35-40c and GPU is around 60-67C(Probably due to the fans being 3% due to auto mode) on idle.

[Damascus]

6 minutes ago, zMeul said:

it will have some degradation

it's a 4x slot at PCIe gen 2 - that's a 2x at gen 3 

Lol not really.

https://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/

[AuraDesru]

2 minutes ago, Damascus said:

Lol not really.

https://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/

Should I move it to the other slot to make room for my cpu cooler to exahust horizontally?

[Damascus]

Just now, AuraDesru said:

Should I move it to the other slot to make room for my cpu cooler to exahust horizontally?

Sure?  It takes like 10 minutes to undo so go for it.

[AuraDesru]

Just now, Damascus said:

Sure?  It takes like 10 minutes to undo so go for it.

This is more of a air cooling question..

Would I actually see a difference in terms of cooling performance by moving it horizontally?

I currently have two 120mm above the DH-15 and the 1070 running around 2000rpm.

 

[zMeul]

9 minutes ago, Damascus said:

Lol not really.

https://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/

yeah really

you fail to take into account that the 4x PCie gen 2 is about as a 2x gen 3; while your graphs only go 8x gen 2

 

@AuraDesru you should keep it in the top slot

but you can also test the differences for yourself

[Damascus]

Like I said, takes a few minutes to change it, so some pc journalism and test it yourself.  

 

Honestly my Bros 4690k runs at full load 35c stock on an NH d14 with only one fan, I doubt it matters.

[Damascus]

33 minutes ago, AuraDesru said:

PCIe 2.0 x16 (x4 mode, black)

Pcie x4 gen 3 = x16 gen 2.

1 minute ago, zMeul said:

yeah really

you fail to take into account that the 4x PCie gen 2 is about as a 2x gen 3; while your graphs only go 8x gen 2

 

[AuraDesru]

1 minute ago, zMeul said:

yeah really

you fail to take into account that the 4x PCie gen 2 is about as a 2x gen 3; while your graphs only go 8x gen 2

 

@AuraDesru you should keep it in the top slotbut you c

I'll keep it in the top slot and raise the fan speeds. Trying to oc to 4.7 ghz 

 

[zMeul]

9 minutes ago, Damascus said:

Pcie x4 gen 3 = x16 gen 2

mate, wtf are you talking about?!

 

4x gen 3 is about 4GB/s in each direction

that equals a 8x gen 2 that's also 4GB/s each direction

while a 16x gen 2 is 8GB/s in each direction

 

get your facts straight

[Damascus]

6 minutes ago, zMeul said:

mate, wtf are you talking about?!

 

4x gen 3 is about 4GB/s in each direction

that equals a 8x gen 2 that's also 4GB/s each direction

while a 16x gen 2 is 8GB/s in each direction

 

get your facts straight

Oops, still counts.  Puget ran the titan on 2.0 X8 with no issues.

[AuraDesru]

 

So I'm getting the feeling that I should keep it in the top..

[zMeul]

1 minute ago, Damascus said:

Oops, still counts.  Puget ran the titan on 2.0 X8 with no issues.

mate, again ... his bottom slot is a 4x gen 2 that equals a 2x gen 3

for god's sake

[Damascus]

7 minutes ago, zMeul said:

mate, again ... his bottom slot is a 4x gen 2 that equals a 2x gen 3

for god's sake

Oh man I need to sleep.  C ya, srry about that. Keep it on 3.0 x16 I suppose