Upgrading from gtx 580 to gtx 780 questions

eclipsebmx · Jul 24, 2014

Ok i have stock HP computer with i7-2600 @3.40ghz and 600w power supply. currently i have gtx 580 with zalman vf 3000f vga cooler installed.everything works fine and it even fits into my tiny case.now im looking to upgrade to gtx 780 but im worried if i won't bottleneck it with my current setup and if my power supply and stock HP motherboard will support it without any problems. both cards have 6+8 pin connectors so that shouldn't be problem imo? this is the card im looking to buy

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127746&cm_re=gtx_780-_-14-127-746-_-Product

please let me know and if you need more info i will post it. i want to make sure that if i buy it it will work without any issues.
ps: im pretty new to this so any info would be great. i just compared specs of both cards and see if they r similar and that way i'd see if it works lol (yea im a newb)

power supply info:

gpu info:

Thelps · Jul 24, 2014

If your PCIe x16 slot is a 2.0 or higher slot then you shouldn't have any bottlenecking problems with that CPU.

You'll want a decent amount of RAM too.

eclipsebmx · Jul 24, 2014

Thelps :

sorry for being newb but where do i check if my pcie x16slot is 2.0?
and my ram is 8gb

xTempered · Jul 24, 2014

To run at its max capacity your mobo needs to have a PCIe 3.0 x16 slot it can run on a 2.0 as well. Your PSU is enough to handle it in overall wattage but you need atleast 42A on the +12v rail or it'll run unstable

Thelps · Jul 24, 2014

eclipsebmx :

Type your Motherboard manufacturer and model or your computer manufacturer and model number into a search engine along with the word 'specifications'.

Somewhere in those specifications you'll see the statistics 'PCIe x16'. If there's a 2.0 or 3.0 after that then you won't see any bottlenecking with any current card as far as your PCIe x16 slot is concerned.

mapesdhs · Jul 24, 2014

That model of CPU *might* be a little bit of a bottleneck in some games when using a 780, but in
general you should be fine. If you do discover the CPU is holding you back, you can always just
move the key bits onto a better board (eg. used ASUS M4Es cost diddly these days), replace the
CPU with a 2600K or a 2700K, overclock it up the wazoo. I've done this five times with 2700Ks
and M4Es, runs at 5GHz every time no problem.

In other games where the CPU is less of an issue, performance should roughly double or
thereabouts (depends on the game, resolution, detail, etc.) My two 580s SLI are quicker
than a 780 most of the time, but not always. The difference between old & new will be
more pronounced in situations with higher resolutions and greater detail. If you only
game at 1680x1050 or less then it won't be so obvious.

Personally, if you can afford it, I'd say get a 780 Ti instead, useful extra speed bump over the 780,
and extra future headroom by adding a 2nd.

Btw, for selling off your old 580, get the max value for it by aiming at those using After Effects.
The 580 is very strong for CUDA (faster than all 600 series cards, faster than almost all the
700s too), two of them beat a Titan with AE. Hence, 580s are a good low budget way those
with less cash can get extra oomph in AE for the RayTrace3D function. If you just eBay the
580, you won't get much (by contrast, I've just sold a 580 for almost $300 equivalent, for
someone using AE).

Ian.

PS. The vast majority of games don't remotely come close to maxing out a PCIe 2 link, never
mind V3. The whole 2 vs. 3 issue with PCIe is irrelevant for most people. It really only makes
a difference for high-res gaming, SLI/CF, multi-screen, 4K, high-detail, etc., and even then some
titles still don't push that much data around. The only one I know of which does is FSX, and
that's because it's coded really poorly, constant reloading data when it shouldn't need to.

bradsctt · Jul 24, 2014

eclipsebmx :

Your RAM is fine, 8GB is enough for modern gaming.

It would be a good idea to check the motherboard model number, but im pretty sure that you should be fine.
Sandy Bridge CPUs have native support for PCIe 2.0, and all of the 6 series and 7 series chipsets support PCIe 2.0 too.

So unless your motherboard is a really low end model, it should be PCIe 2.0.

Edit: to add to mapesdhs comment, the i7 2600 still outperforms the i5 4670K, even after 2 years.
So you shouldn't have any CPU bottlenecking issues with a GTX 780, since the i5 can easily handle SLI 780.

eclipsebmx · Jul 24, 2014

xTempered :

pcie info:

power supply info:

eclipsebmx · Jul 24, 2014

mapesdhs :

That model of CPU *might* be a little bit of a bottleneck in some games when using a 780, but in
general you should be fine. If you do discover the CPU is holding you back, you can always just
move the key bits onto a better board (eg. used ASUS M4Es cost diddly these days), replace the
CPU with a 2600K or a 2700K, overclock it up the wazoo. I've done this five times with 2700Ks
and M4Es, runs at 5GHz every time no problem.

In other games where the CPU is less of an issue, performance should roughly double or
thereabouts (depends on the game, resolution, detail, etc.) My two 580s SLI are quicker
than a 780 most of the time, but not always. The difference between old & new will be
more pronounced in situations with higher resolutions and greater detail. If you only
game at 1680x1050 or less then it won't be so obvious.

Personally, if you can afford it, I'd say get a 780 Ti instead, useful extra speed bump over the 780,
and extra future headroom by adding a 2nd.

Btw, for selling off your old 580, get the max value for it by aiming at those using After Effects.
The 580 is very strong for CUDA (faster than all 600 series cards, faster than almost all the
700s too), two of them beat a Titan with AE. Hence, 580s are a good low budget way those
with less cash can get extra oomph in AE for the RayTrace3D function. If you just eBay the
580, you won't get much (by contrast, I've just sold a 580 for almost $300 equivalent, for
someone using AE).

Ian.

PS. The vast majority of games don't remotely come close to maxing out a PCIe 2 link, never
mind V3. The whole 2 vs. 3 issue with PCIe is irrelevant for most people. It really only makes
a difference for high-res gaming, SLI/CF, multi-screen, 4K, high-detail, etc., and even then some
titles still don't push that much data around. The only one I know of which does is FSX, and
that's because it's coded really poorly, constant reloading data when it shouldn't need to.

well id go for gtx 780ti but its $200 more expensive lol and id probably upgrade whole new computer by the time 800 or 900 series come. so for now ill stick with 780.
thanks for all the info!

bradsctt · Jul 24, 2014

Yeah, you have PCIe 2.0, so you will be fine.

eclipsebmx · Jul 24, 2014

how about my power supply? xTempered said i need 42A on +12v rail
power supply info:

xTempered · Jul 24, 2014

Yep, You got a PCIe 2.0 x16 and a PSU w/ max 56A +12v rail. So you should be perfectly fine getting the 780. I only dislike the fact that its a multi-rail PSU but thats a personal opinion and a never ending arguement among the pc hardware community,

eclipsebmx · Jul 24, 2014

xTempered :

thanks a lot!!
very good news for me haha

eclipsebmx · Jul 24, 2014

bradsctt :

eclipsebmx :

Your RAM is fine, 8GB is enough for modern gaming.

It would be a good idea to check the motherboard model number, but im pretty sure that you should be fine.
Sandy Bridge CPUs have native support for PCIe 2.0, and all of the 6 series and 7 series chipsets support PCIe 2.0 too.

So unless your motherboard is a really low end model, it should be PCIe 2.0.

Edit: to add to mapesdhs comment, the i7 2600 still outperforms the i5 4670K, even after 2 years.
So you shouldn't have any CPU bottlenecking issues with a GTX 780, since the i5 can easily handle SLI 780.

great to hear that thnx!

xTempered · Jul 24, 2014

eclipsebmx :

No problem. Glad the others and I could be of help thats what we're here for.

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