How much for sli

[Adab5]

8700k 5.1 oc - 1.385v

gtx 1080ti oc to 2088/6011 

custom loop with 2 240 slim radiator and d5 pump

And 16gb g skill ram+Asus hero x 

for now I have 750w Corsair 

 

how much psu is required if I’m adding more 1080ti so it will be sli of 1080ti oc 

And 8700k at 1.385v v 

[Streetguru]

Just now, Adab5 said:

 

Waste of money to get SLI, just save your money for the soon to be released 1180ti or Radeon Navi 4 die mega ultra GPU that probably won't exist.

[Adab5]

7 minutes ago, Streetguru said:

Waste of money to get SLI, just save your money for the soon to be released 1180ti or Radeon Navi 4 die mega ultra GPU that probably won't exist.

It’s for benchmark perpes.

[Streetguru]

2 minutes ago, Adab5 said:

It’s for benchmark perpes.

Then get some crazy high end Platinum 1200W unit with near perfect voltage regulation?

Or buy that 1600W unit if you're going to run 4GPUs off one PSU? Or just use 2 PSUs at that point I guess.

[STRMfrmXMN]

44 minutes ago, Adab5 said:

8700k 5.1 oc - 1.385v

gtx 1080ti oc to 2088/6011 

custom loop with 2 240 slim radiator and d5 pump

And 16gb g skill ram+Asus hero x 

for now I have 750w Corsair 

 

how much psu is required if I’m adding more 1080ti so it will be sli of 1080ti oc 

And 8700k at 1.385v v 

Someone already pointed out how much of a waste it is to go SLI these days, but since you asked...

 

With OC's that sky-high I would probably go for an 850W unit. Should leave you headroom if you want to benchmark two Titans as well.

[PSUGuru]

3 hours ago, Adab5 said:

8700k 5.1 oc - 1.385v

gtx 1080ti oc to 2088/6011 

custom loop with 2 240 slim radiator and d5 pump

And 16gb g skill ram+Asus hero x 

for now I have 750w Corsair 

 

how much psu is required if I’m adding more 1080ti so it will be sli of 1080ti oc 

And 8700k at 1.385v v 

SLI is dying. It offers little performance gains in games that support it. In most other games, it'll see diminished performance, downwards to a 30 FPS decrease.

[Mick Naughty]

Don’t see what any of that has to do with what he asked. Sli talk from a bunch of plebs. 

 

I myself would upgrade the unit. Would really prefer platinum and something that rides well in the 70/80% range while still being quite. 

[Adab5]

19 hours ago, QuantumElement said:

SLI is dying. It offers little performance gains in games that support it. In most other games, it'll see diminished performance, downwards to a 30 FPS decrease.

30 FPS decrees? Are you sure

i’v been Told that I maybe gain more 15-30 fps in games and in worst case scenario I will have the “just one card fps”

but decress of up to 30fps from one card? That sounds very weird 

[Mick Naughty]

1 minute ago, Adab5 said:

30 FPS decrees? Are you sure

i’v been Told that I maybe gain more 15-30 fps in games and in worst case scenario I will have the “just one card fps”

but decress of up to 30fps from one card? That sounds very weird 

Not everyone that actually comments has used sli. So they parrot what someone else said. Even they person may not know what they are doing, so they blame what they can. A lot of things are overlooked so that tends to happen. Ive never had a decrease that could be blamed on sli. Other random issued would take that blame.

[Vegetable]

6 minutes ago, Adab5 said:

30 FPS decrees? Are you sure

i’v been Told that I maybe gain more 15-30 fps in games and in worst case scenario I will have the “just one card fps”

but decress of up to 30fps from one card? That sounds very weird 

I had SLI gtx 570s, gtx 580s, and gtx 650 ti boosts. All of them scaled alright for the most part. I'd say on average each GPU was at 60-70% usage. But therein the problem lays, for example, in GTA V all of my SLI setups refused to go over 50% usage PER CARD, so thats "just one card fps", but then often the usage would drop to 40-45% PER CARD, so thats less than a single cards performance. Overall it was just a headache, but hey maybe im crazy and wrong because my cards were all old at this point. 

[PSUGuru]

2 hours ago, Adab5 said:

30 FPS decrees? Are you sure

i’v been Told that I maybe gain more 15-30 fps in games and in worst case scenario I will have the “just one card fps”

but decress of up to 30fps from one card? That sounds very weird 

I remember seeing benchmarks that some games see a decrease in performance. I believe it was ghost recon that saw a big decrease in FPS.

[nick name]

@Adab5Get a platinum 1000W or higher. Either in rating or power. You don't wanna be the one guy posting about an SLI rig with a tiny PSU. That's like skipping leg day, my friend. 

 

@Streetguru You realize being the first person to tell an OP their idea is dumb instead of answering their actual question is kinda dickish right?

[Streetguru]

6 minutes ago, nick name said:

@Adab5Get a platinum 1000W or higher. Either in rating or power. You don't wanna be the one guy posting about an SLI rig with a tiny PSU. That's like skipping leg day, my friend. 

 

@Streetguru You realize being the first person to tell an OP their idea is dumb instead of answering their actual question is kinda dickish right?

He didn't say it was for benchmarking and not gaming

[PSUGuru]

3 minutes ago, nick name said:

@Adab5Get a platinum 1000W or higher. Either in rating or power. You don't wanna be the one guy posting about an SLI rig with a tiny PSU. That's like skipping leg day, my friend. 

 

@Streetguru You realize being the first person to tell an OP their idea is dumb instead of answering their actual question is kinda dickish right?

You can power two 1080 tis with an 8700k with a 650 watt PSU. According to PCPP wattage calculator it estimates almost 700 watts, which is obivously way off because PSU calculators are trash. Under normal gaming loads, the power draw is likely closer to 300-350 watts because I don't know of any game that will cause both GPUs to run at 80-100% load. 650 watt PSU is fine, but, I would recommend a 750 PSU instead.

[Mick Naughty]

Doesn’t matter what’s it for. Not everyone wants to lower their gameplay. 

[Streetguru]

27 minutes ago, QuantumElement said:

 

If you're running any kind of dual GPU system you'd want to start with a good 1000W Unit

 

for trying to hit benchmarking records you probably want something higher end than that.

[awesomegamer919]

12 minutes ago, Streetguru said:

If you're running any kind of dual GPU system you'd want to start with a good 1000W Unit

 

for trying to hit benchmarking records you probably want something higher end than that.

Let's say absolute best scaling scenario - 1080Ti SLI with both GPUs pinned at 100%, that's 600w there, CPU is a further ~100w, that's still plenty of space on an 850w... 1kW only makes sense for SLI + HEDT or 3-way SLI...

[Streetguru]

2 minutes ago, awesomegamer919 said:

Let's say absolute best scaling scenario - 1080Ti SLI with both GPUs pinned at 100%, that's 600w there, CPU is a further ~100w, that's still plenty of space on an 850w... 1kW only makes sense for SLI + HEDT or 3-way SLI...

You don't want to run your PSU at the limit and if you can afford 2 1080tis you can easily afford a $200-$300 PSU
 

That's also not counting any volt mods which probably runs it closer to 400W.

[awesomegamer919]

Just now, Streetguru said:

You don't want to run your PSU at the limit and if you can afford 2 1080tis you can easily afford a $200-$300 PSU
 

That's also not counting any volt mods which probably runs it closer to 400W.

OP didn't mention voltmods, also there's nothing wrong with running your PSU at 90%, that's entirely a myth...

[nick name]

55 minutes ago, QuantumElement said:

You can power two 1080 tis with an 8700k with a 650 watt PSU. According to PCPP wattage calculator it estimates almost 700 watts, which is obivously way off because PSU calculators are trash. Under normal gaming loads, the power draw is likely closer to 300-350 watts because I don't know of any game that will cause both GPUs to run at 80-100% load. 650 watt PSU is fine, but, I would recommend a 750 PSU instead.

You also understand that certain people like to operate within a certain range of their PSU and not simply using it at its max. Which is what someone might do with a 650W or 750W. Think of driving a car and driving it at a constant high RPM as opposed to finding that car's ideal power band with its RPM range. That is kinda what people do with PSU's.

[awesomegamer919]

Just now, nick name said:

You also understand that certain people like to operate within a certain range of their PSU not simply that using it at it max. Which is what someone might do with a 650W or 750W. Think of driving a car and driving it at a constant high RPM as opposed to finding that car's ideal power band with its RPM range. That is kinda what people do with PSU's.

Except there's really no benefit to doing that, PSUs are designed to be able to output 100% power 24/7 for extended periods of time...

[nick name]

Just now, awesomegamer919 said:

Except there's really no benefit to doing that, PSUs are designed to be able to output 100% power 24/7 for extended periods of time...

Sure there is. Fan noise is one thing that comes to mind. 

[awesomegamer919]

1 minute ago, nick name said:

Sure there is. Fan noise is one thing that comes to mind. 

Fan noise is irrelevant of PSU total wattage, don't think of load as a % of total wattage but as a flat number, if your PSU is 90% efficient then it doesn't matter if it's an 850w pushing 800w or a 1000w pushing 800w, it still has to dissipate 89w of heat... 

[nick name]

1 hour ago, Streetguru said:

He didn't say it was for benchmarking and not gaming

And neither did you. 

[nick name]

1 minute ago, awesomegamer919 said:

Fan noise is irrelevant of PSU total wattage, don't think of load as a % of total wattage but as a flat number, if your PSU is 90% efficient then it doesn't matter if it's an 850w pushing 800w or a 1000w pushing 800w, it still has to dissipate 89w of heat... 

Do you really think the components inside a 650W and a 1200W PSU dissipate heat at the same rates?