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Can You SLI Two Different GPUs?

GTX 1070 + 980Ti: Two Totally different GPUs Working Collectively

Merely put, NO! you can’t SLI two totally different NVIDIA graphics card. To ensure that SLI to work, you could have GPUs with the identical chipset. As an illustration, an NVIDIA GTX 1070 can solely SLI with one other NVIDIA GTX 1070 solely.


Does It Should Be from the Identical Model?

No! With the intention to SLI NVIDIA graphics card, they don’t must be of the identical model. So long as they’ve the identical chipset, they’re good for SLI.

As an illustration, an EVGA GTX 1660 CAN SLI with ASUS GTX 1660 since they’ve the identical GPU chipset “1660”.

Sorts of SLI Configuration

There are three varieties of SLI configurations in which you’ll be able to join a number of GPUs (as much as 4).

2-Approach SLI – On this, you may join two single GPU graphics playing cards in SLI mode utilizing 2-way SLI Bridge.

3-Approach SLI – On this, you may three single GPU graphics playing cards in SLI utilizing 3-way SLI Bridge.

4-Approach SLI or Quad SLI – That is additionally known as Quad SLI and on this, you may join 4 single GPUGraphics Playing cards in SLI utilizing 4-way SLI Bridge or can join two twin GPU graphics playing cards utilizing 2-way SLI bridge. You can not join 3 or 4 twin GPU graphics playing cards in SLI as a result of that might make it Hexa and Octa SLI configuration which doesn’t exist.

Word: 2-way SLI is the most well-liked and lively SLI configuration used as we speak as a result of Nvidia has reportedly dropped a lot of the assist for 3-way and 4-way SLI. That is due to the complexity concerned in driver growth. Fashionable graphics playing cards reminiscent of GTX 1070, GTX 1080 and better will solely assist 2-way SLI.

Is SLI Lifeless? DirectX 12; a Demise Knell for SLI?

Recall from earlier within the article the place I discussed that whether or not a sport helps SLI or not is decided whether or not NVIDIA has launched a driver profile for it.

Properly that’s the way it was till very not too long ago with the launch of DirectX 12 and Vulkan APIs.

Now. as an alternative of counting on NVIDIA to launch the SLI profiles for a sure sport – which are sometimes buggy and never made to squeeze out one of the best of the efficiency from the a number of GPUs – with DirextX 12 and Vulkan graphics API, the sport builders can now write their very own codes to utilize a number of GPU in the easiest way doable.

In a preferred press launch by NVIDIA titled “NVIDIA SLI Support Transition to Native Game Integrations“, they talked about:

NVIDIA will now not be including new SLI driver profiles on RTX 20 Sequence and earlier GPUs beginning on January 1st, 2021


For GeForce RTX 3090 and future SLI-capable GPUs, SLI will solely be supported when applied natively inside the sport.

The flexibility for the video games and functions to regulate if and the way they assist multi-GPUs known as Express Multi-GPU assist. Here is a comprehensive article on this topic.

In all actuality, NVIDIA pulling out of making SLI profiles and placing this burden on the builders reveals the waning recognition of the SLI and multi-GPU itself.

This together with the truth that all, however the RTX 3090, from the RTX 30 collection (i.e the RTX 3070 and the RTX 3080) lack an NVLINK connector point out the finish of the SLI period is nigh.

Additionally Learn: Does Your PC Need a Graphics Card if its Not for Gaming?


The first good thing about working two graphics playing cards is elevated online game efficiency. When two or extra playing cards render the identical 3D photos, PC video games run at larger body charges and at larger resolutions with extra filters. This further capability improves the standard of the graphics in video games. Most graphics playing cards render video games as much as 1080p decision. With two graphics playing cards, video games run at larger resolutions, reminiscent of on 4K shows that provide 4 instances the decision. As well as, a number of graphics playing cards can drive extra displays.

A good thing about utilizing an SLI or Crossfire-compatible motherboard is {that a} PC might be upgraded at a later time with out changing the graphics card. Add a second graphics card later to spice up efficiency with out eradicating the prevailing graphics card. Producers improve graphics playing cards about each 18 months and a appropriate card could also be troublesome to seek out after two years.

SLI Modes

Nvidia graphics playing cards will work collectively in SLI in three important modes: SLI anti-aliasing, SFR, and AFR. You may choose and alter these modes within the Nvidia Management Panel, which ought to have been put in onto your laptop while you put in your video card drivers.

Break up Body Rendering (SFR)

This methodology takes the body that must be rendered, analyzes it, after which splits up the body horizontally into as many items as there are playing cards, and sends the workload between them. It may break up the body the way it sees match primarily based on what’s within the body.

For instance, if the body incorporates a largely empty, static sky within the prime half of the body (much less useful resource intensive), however shifting characters within the backside half (extra intensive), then it’s going to decide that one card could be doing extra work whether it is merely break up 50/50. So, the cardboard chargeable for the higher portion of the display screen could obtain about 60% of the display screen actual property whereas the cardboard chargeable for the underside will solely should course of the underside 40%. (Word: these percentages are simply imprecise examples, not concrete numbers.)

Alternate Body Rendering (AFR)

On this mode, the frames are queued up and every card renders a full-frame. So, in case you are working 2 playing cards, then one could be chargeable for even-numbered frames whereas the opposite could be chargeable for odd-numbered frames. That is typically thought-about more practical than SFR for attaining larger body charges, however it might probably additionally trigger points reminiscent of micro stuttering.

Key phrase: Micro Stuttering – This it while you see visible stutters in your display screen attributable to a discrepancy in body rendering instances between playing cards. If the playing cards aren’t synced up correctly, or they don’t have sufficient data to guess the following body that must be rendered, then you will notice a delay.

SLI anti-aliasing

This mode permits for higher picture high quality, versus pushing larger body charges. It really works to separate the anti-aliasing workload between the playing cards, rising the general high quality of your picture.

Utilizing this mode can unlock larger anti-aliasing modes inside video games (reminiscent of SLI 8x, 16x, and even 32x on quad-SLI programs).

Key phrase: Anti-aliasing – Laptop pixels are product of squares, which can lead to spherical photos wanting jagged round their edges. Anti-aliasing helps repair this by sampling pixels round the issue space after which filling in one of the best approximate guess.

SLI Bridge Sequence

BridgePixel Clock PaceMax BandwidthReally useful Monitor Assist
Customary Bridge400 Mhz1GB/s1920×1080 by 2560×1440 @60 Hz
Excessive-Bandwidth Bridge650 Mhz2GB/sAs much as 5k and encompass sound

In case you have extra highly effective playing cards (like say the GTX 1080), you should use a typical bridge, but it surely gained’t enable for the complete efficiency of the playing cards. The high-bandwidth brides would enable for this.

Record of Desktop Graphics Playing cards supporting SLI

Right here is the record of all SLI supported desktop graphics playing cards from Nvidia.

  • GeForce RTX 2080 Ti
  • GeForce RTX 2080 SUPER
  • GeForce RTX 2080
  • GeForce RTX 2070 SUPER
  • Nvidia Titan Xp
  • GeForce GTX 1080 Ti
  • Nvidia Titan X
  • GeForce GTX 1080
  • GeForce GTX 1070
  • GeForce GTX TITAN X
  • GeForce GTX 980 Ti
  • GeForce GTX 980
  • GeForce GTX 970
  • GeForce GTX 960
  • GeForce GTX 950
  • GeForce GTX TITAN
  • GeForce GTX 780 Ti
  • GeForce GTX 780
  • GeForce GTX 770
  • GeForce GTX 760 Ti
  • GeForce GTX 760
  • GeForce GTX 690
  • GeForce GTX 680
  • GeForce GTX 670
  • GeForce GTX 660 Ti
  • GeForce GTX 660
  • GeForce GTX 650 Ti BOOST
  • GeForce GTX 480
  • GeForce GTX 470
  • GeForce GTX 465
  • GeForce GTX 460
  • GeForce GTX 460 SE
  • GeForce GTS 450
  • GeForce GTX 555 (OEM)
  • GeForce GTX 560 Ti (OEM)
  • GeForce GTX 560
  • GeForce GTX 550 Ti
  • GeForce GTX 590
  • GeForce GTX 660
  • GeForce GTX 560 Ti
  • GeForce GTX 545 GDDR5
  • GeForce GTX DDR3
  • GeForce GTX 570
  • GeForce 9800 GT
  • GeForce GTX 580
  • GeForce 9600 GT
  • GeForce 8500 GT
  • GeForce 8600 GTS
  • GeForce 8600 GT
  • GeForce 8400 GS
  • GeForce GTX 275X
  • GeForce GTS 150
  • GeForce GT 130
  • GeForce GT 120
  • GeForce GTS 250
  • GeForce GTX 285
  • GeForce GTX 295
  • GeForce 8800 ULTRA
  • GeForce GTX 280
  • GeForce 8800 GTX
  • GeForce 9800 GX2
  • GeForce GTX 260
  • GeForce 9400 GT
  • GeForce 9500 GT
  • GeForce 9800 GTX
  • GeForce 9800 GTX+

Remaining Phrases

Ultimately I wish to say that I’ve tried my greatest to clarify all of the vital issues relating to SLI. In case you nonetheless have any queries or doubts then be at liberty to ask me by leaving a remark under.


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