2x 780GTX's in SLI with a 4790K CPU Not at full use help

AllanDC

AllanDC

AllanDC

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I was wondering if anybody could throw some light on the following issue.

SLI I know in most modern games does not work / not supported. At the moment I currently play Elite Dangerous (Not Odyssey) on max setting at a resolution of 1440x3440 and it is showing as using SLI.

Both GPU's site at about 65% and the CPU sit's at about 20-60% I have 16GB Ram running at 2400mhz

Do I have a bottleneck on something I don't know about?

Any Advice would be good.

I would get a new card but everyone knows what's going on at the moment.

Thanks
 
AORUS said:
The 4790K Processor only supports DDR3 1333/1600, DDR3L-1333/1600. And Elite Dangerous doesn't support SLI.:) And as you know SLI is effectively dead.
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Yes as memory is overclocked by the xmp setup in the motherboard.

The whole SLI in 2014 when I got the cards seemed a great idea but it's proved to be more troublesome every year.

Thanks for your thoughts
 
Rroff said:
My 1650 V2 only supports 1866 officially - 2400 and 2800MHz RAM goes in fine, enable XMP and away it goes. Though on this era XMP can be hit and miss and you may have to hand tune it.
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The memory has as far as I'm aware been running flawlessly since I got the setup in 2014 and as you suggested it has been through the XMP profile in the bios.

Thanks
 
Emlyn_Dewar said:
Memory overclocking is a thing. :cry:
Quite right on the SLI support though. Could maybe try on older GPU drivers?
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Thanks I'll give that a shot. Never crossed my mind to try older drivers. Any idea how far back I should go?? I can't remember a point in which it just stopped working. Been bring up the kinds and found myself with a bit more time in which I have time to game again.

Thanks
 
Thanks KompuKare

I'll run MSI Afterburner with the monitoring on and see if any of the cores are running near full. I'm also going to try with an old GPU driver after to see if that has any effect.
 
I managed to get from a friend a loan of an RX480. Seems to go better the a single 780gtx and the same if not better than the 780’s in SLI.

GPU runs at 100%

Thanks for the input.
 
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mickyflinn said:
Doubt he'll go for that knowing the 780 is loosing support but checking driver the 780 does nt loose it till August 31, 2021 which seems strange that its a driver issuie affecting your 780

Did you try a single card 780.


https://nvidia.custhelp.com/app/answers/detail/a_id/5202
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Yes I did. The usage was showing at 100% but just slow… I do think it’s the small amount of vram on these cards that slows it all down.

Anyways temp fix with the new to me RX480.
Thanks
 
HangTime said:
SLI is good in theory (.......) for a lot of reasons:

  • Allows incremental upgrades without having to throw out your old card
  • Can be very cost effective by letting you buy the best value cards and outperform a single high end card
  • Can give the best outright performance
Sadly it also has a lot of risks/flaws:
  • Relies on game / driver support
  • Heat / power consumption
  • Potential VRAM limitations
  • Motherboard compatibility (e.g. reduced PCI-E lane speeds)
Get your cards on ebay whilst they are still worth something innit.
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Very well explained. Thank you.
I’ll take a look at ebay and see how much they are going for. If not they are nice looking cards they might end up in my man cave on a display shelf.
 
Thanks for the effort. I hadn’t look yet but that’s alright. I paid £250 per card back then as far as I can remember so that’s a decent return.
I always get a bit nervous about selling stuff like that on eBay with all the “it arrived not working” rubbish that goes on. :cry:
 
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