# V-Ray RT GPU and ATI cards with 10.12 drivers **URL:** \ **Category:** Hardware\ **Created:** [December 14, 2010, 10:12am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463 "2010-12-14T10:12:50Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [December 14, 2010, 10:12am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/1 "2010-12-14T10:12:50Z")
Hello, Finally the 10.12 drivers from ATI support V-Ray RT GPU; there is one remaining issue though: the second GPU of dual cards like the 5970 card will not work properly and needs to be disabled from the V-Ray OpenCL device select utility. Multiple GPUs on separate cards however seem to work fine. ATI are aware of the issue, so hopefully it will be resolved as well. From my initial tests with a 5970 card, performance is very scene-dependent and gets better for more complicated scenes. I haven’t tested newer cards though. Best regards, Vlado ---
**Author:** ![sandykoufax](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/sandykoufax/32/49770_2.png) [@sandykoufax](https://forums.chaos.com/u/sandykoufax)\ **Post date:** [December 14, 2010, 10:42am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/2 "2010-12-14T10:42:56Z")
Good news 🙂 ---
**Author:** ![absolute3d](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/absolute3d/32/25906_2.png) [@absolute3d](https://forums.chaos.com/u/absolute3d)\ **Post date:** [December 14, 2010, 11:42am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/3 "2010-12-14T11:42:31Z")
Thanks a lot Vlado. vote 10 for chaosgroup !! 🙂 Cheers, Thomas ---
**Author:** ![Dariusz\_Makowski\_Dadal](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@Dariusz\_Makowski\_Dadal](https://forums.chaos.com/u/Dariusz_Makowski_Dadal)\ **Post date:** [December 14, 2010, 12:02pm UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/4 "2010-12-14T12:02:27Z")
AAAAAA Huraaaaaaaaaaaaaaaaaa 😄 vlado any idea on speed comparison ATI VS NVIDIA? number anything..? ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [December 14, 2010, 12:05pm UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/5 "2010-12-14T12:05:05Z")
> [@DADAL](#): > > AAAAAA Huraaaaaaaaaaaaaaaaaa 😄 vlado any idea on speed comparison ATI VS NVIDIA? number anything..? I will need to get some new hardware to make more precise tests; my ATI card is more than a year old now… Best regards, Vlado ---
**Author:** ![Dariusz\_Makowski\_Dadal](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@Dariusz\_Makowski\_Dadal](https://forums.chaos.com/u/Dariusz_Makowski_Dadal)\ **Post date:** [December 14, 2010, 12:17pm UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/6 "2010-12-14T12:17:06Z")
weh ;s still how does its core work to nvidia? Ati and their 3200 cores… ---
**Author:** ![Alan\_Iglesias](https://avatars.discourse-cdn.com/v4/letter/a/76d3ee/32.png) [@Alan\_Iglesias](https://forums.chaos.com/u/Alan_Iglesias)\ **Post date:** [December 15, 2010, 12:21am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/7 "2010-12-15T00:21:56Z")
It will be most interesting to see how the ATI/nVidia performance compares core to core… -Alan ---
**Author:** ![GatesB](https://avatars.discourse-cdn.com/v4/letter/g/919ad9/32.png) [@GatesB](https://forums.chaos.com/u/GatesB)\ **Post date:** [December 15, 2010, 2:08am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/8 "2010-12-15T02:08:36Z")
This is superb news! Congrats Vlado and ChaosGroup, you guys are the best. -TS- ---
**Author:** ![s0real](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/s0real/32/47064_2.png) [@s0real](https://forums.chaos.com/u/s0real)\ **Post date:** [December 15, 2010, 4:07pm UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/9 "2010-12-15T16:07:33Z")
> [@Alan\_Iglesias](#): > > It will be most interesting to see how the ATI/nVidia performance compares core to core… > > -Alan me too! gtx 580 with 512 cores v’s HD 6970 with 1536 stream processors… _fight!_ ---
**Author:** ![tehfailsafe](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tehfailsafe](https://forums.chaos.com/u/tehfailsafe)\ **Post date:** [December 16, 2010, 7:53am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/10 "2010-12-16T07:53:53Z")
So I have a 5870 currently as my display card and 2 GTX470s as my render cards, does this mean I could now mash them all up in a super KPaths/sec bonanza!? ---
**Author:** ![Dariusz\_Makowski\_Dadal](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@Dariusz\_Makowski\_Dadal](https://forums.chaos.com/u/Dariusz_Makowski_Dadal)\ **Post date:** [December 16, 2010, 8:12am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/11 "2010-12-16T08:12:46Z")
> [@tehfailsafe](#): > > So I have a 5870 currently as my display card and 2 GTX470s as my render cards, does this mean I could now mash them all up in a super KPaths/sec bonanza!? Try at let us know? Do GTX vs ATI test too plox ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [December 16, 2010, 9:42am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/12 "2010-12-16T09:42:26Z")
> [@tehfailsafe](#): > > So I have a 5870 currently as my display card and 2 GTX470s as my render cards, does this mean I could now mash them all up in a super KPaths/sec bonanza!? No, it probably won’t work right now. Currently V-Ray RT assumes that all the video cards can load the same binary GPU code. This means that the cards must be more or less similar. Will work on this though. Best regards, Vlado ---
**Author:** ![tehfailsafe](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tehfailsafe](https://forums.chaos.com/u/tehfailsafe)\ **Post date:** [December 21, 2010, 5:13am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/13 "2010-12-21T05:13:34Z")
Finally had some time to try this out, but after installing the 10.12 drivers and even the full control center suite I don’t get my ATI card from the select openCL devices menu, just the 2x GTX 470s. Do I have to remove the 470’s to test it out? ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [December 21, 2010, 6:41am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/14 "2010-12-21T06:41:36Z")
I don’t think a mixed configuration will work just yet; you can try disabling the GTX’s (probably no need to physically remove them). Best regards, Vlado ---
**Author:** ![tehfailsafe](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tehfailsafe](https://forums.chaos.com/u/tehfailsafe)\ **Post date:** [December 21, 2010, 6:45am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/15 "2010-12-21T06:45:13Z")
Not sure how to disable them without removing, can you explain that? I’ve always just popped them out, but if I can avoid it everyting that’d be great! ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [December 21, 2010, 6:50am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/16 "2010-12-21T06:50:53Z")
You can do that from the Device Manager (right-click a card and select “Disable device”; you can also re-enable it in the same way). Not quite sure how it will work if one of the cards is the primary display adapter though, so some care might be necessary 🙂 Best regards, Vlado ---
**Author:** ![tehfailsafe](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tehfailsafe](https://forums.chaos.com/u/tehfailsafe)\ **Post date:** [December 21, 2010, 7:04am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/17 "2010-12-21T07:04:56Z")
Both cards I use for render only, so no prob there. After disablign them, I get a blank spot in select openCL device. I can actually set the the device to " ", which seems odd, instead of the “cannot find openCL device” error. ---
**Author:** ![tehfailsafe](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tehfailsafe](https://forums.chaos.com/u/tehfailsafe)\ **Post date:** [December 21, 2010, 7:12am UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/18 "2010-12-21T07:12:22Z")
Interesting… After restarting I still select " " as my device, hit set, and launch max, it works… Much slower than CPU though, and the look is quite different from CPU. weird. It’s getting late over here so I’ll try to post more in the morning if you’re curious. ---
**Author:** ![dlparisi](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/dlparisi/32/14236_2.png) [@dlparisi](https://forums.chaos.com/u/dlparisi)\ **Post date:** [December 22, 2010, 6:23pm UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/19 "2010-12-22T18:23:12Z")
I’m trying to get this to run on an older ATI HD4850 card but I can’t get it to run without crashing the RT status window. I installed 10.12. I can see the card in the “Select OpenCL devices” program and RT seems to be using it (see the status window). As soon as it starts though it crashes the vray.exe window. I’ve tried it in XPx64 and win7x64, both are the same. I know it won’t be that fast but should it even run or is something wrong? ---
**Author:** ![bear75](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/bear75/32/30964_2.png) [@bear75](https://forums.chaos.com/u/bear75)\ **Post date:** [December 22, 2010, 6:41pm UTC](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463/20 "2010-12-22T18:41:16Z")
> [@dlparisi](#): > > I’m trying to get this to run on an older ATI HD4850 card but I can’t get it to run without crashing the RT status window. I installed 10.12. I can see the card in the “Select OpenCL devices” program and RT seems to be using it (see the status window). As soon as it starts though it crashes the vray.exe window. I’ve tried it in XPx64 and win7x64, both are the same. I know it won’t be that fast but should it even run or is something wrong? try deleting \*.clbin file from your temp directory, usually is needed after installing new drivers… [Next page](https://forums.chaos.com/t/v-ray-rt-gpu-and-ati-cards-with-10-12-drivers/26463.md?page=2)