I have seen on some great scores from using a SS or even a Dice/LN2 pot on a video card BUT they don't use a riser cable when benching? I know if I use a x16 riser cable this would give me more flexibility/room over installing it straight to the MB. Is there a reason not to use one (lower score)?

I'm looking to try a setup like this but use a riser cable -> https://hwbot.org/submission/5272727_nachtfalke_3dmark2001_se_geforce_gtx_560_ti_211697_marks

Here is a link to a x16 riser cable that I'm looking to use. https://www.ebay.com/itm/175473701215?hash=item28db0c315f:g:MfMAAOSwDtRjYdzQ&amdata=enc%3AAQAIAAAAwBeiLKuDkdsG%2BExl5tcXF6AVxC2vA48DlhW0ISsorfz4WtU7k9rA3QWMiRGgP8%2FNahrNoRH8o5%2BSC0nmxbikCyLXFK7JcPIK6rqDNWGmLhrfrtqogYMo%2B4dJWap5jnoY6vdAQY3%2F0WtibkI9LflpdoUDjUD4%2F1hCk17Dmkg%2BwHQIcVP3%2BRiZCm%2FEULYm6B05Exig1xUceL6h7PsJ1sXVY26EPkmImBNzA2L9c5LmhWUWhbiTPeVtAgWgdbloEN%2FjcA%3D%3D|tkp%3ABk9SR46XysuCYg

 

Thank You For Your Time

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I'm using it quite often but haven't tested it with 3.0 cards yet

I saw this today ? from Nachtfalke's submission with a GTX-570.

 https://hwbot.org/submission/5274497_nachtfalke_3dmark2001_se_geforce_gtx_570_231091_marks

^ WOW!!! That SCREAMS Elite ?

Thank You for that great picture.

the most convenient length is 40 cm (uses a raptor) I took 30 cm for myself and this causes inconvenience in terms of the location of the video card

Is there a performance/efficiency hit for using one of these? The traces are now much longer...

Shouldn't be. 100mhz is still 100mhz. Performance hit is possible if connection has problems and pcie drops to older version (pcie 1.0 instead of i.e 2.0) or lower mode (pcie x4 instead of x16).