Stop struggling with Lightroom! There's no need to spend hours hunting for the answers to your Lightroom Classic questions. All the information you need is in 
- Joined
- Mar 21, 2015
- Messages
- 3,673
- Location
- Dublin, Ireland.
- Lightroom Experience
- Power User
- Lightroom Version
- Classic
- Lightroom Version Number
- Classic 12.2.1
- Operating System
- Windows 10
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"This is a relatively long discussion. It is worth reading the discussion in sequence, as posted."
To assist people returning to this discussion, the following are direct links to frequently used posts.
Post #20 contains a link to a raw file to use, if you wish to compare the performance of your rig to others.
https://www.lightroomqueen.com/comm...e-nvidia-rtx-4070-ti-12gb.47572/#post-1315509
Post #30 contains a summary of Denoise performance stats for a range of GPU’s and CPU’s from readers of this post.
https://www.lightroomqueen.com/comm...ia-rtx-4070-ti-12gb.47572/page-2#post-1315545
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I am posting this on the Lightroom Classic forum, as I think it is most relevant to Classic users.
With GPU prices softening and the release of the 4xxx range I decided to purchase the Gigabyte Nvidia RTX 4070 Ti 12GB. I was aware, before purchase that I needed a min 750 Watt GPU. I already had a recently purchased Corsair RM850X model and plenty of spare Corsair supplied compatible internal power cables.
The GPU was tricky to install because of its size and the need to install an awkward bracket support system. The GPU was supplied with a Y cable, where the single end was plugged into the GPU and the two other ends plugged into separate power cables (not supplied by Gigabyte) which were then plugged into the PSU. I used Corsair cables, supplied with my PSU.
I triple checked that I had the polarity of all the cable connections correct, square pins fitted into square holes and rounded pins fitted into rounded holes etc. When I powered up my PC….. nothing happened. Nothing. No lights, no fans starting up, no status numbers on the internal motherboard display. Totally dead... and no clue as to what the problem might be. I feared the worst.
I completely disassembled my PC and removed the Corsair power supply. I then followed the Corsair instructions on how to test the PSU. All tests passed and all (28 I think) pin outs had exactly the correct voltage settings.
I rebuilt my rig, this time reinstalling my old GPU. With much relief, it booted perfectly. I was worried that many of my main components, such as motherboard, processor, PSU, etc had been toasted.
I sent a query to Gigabyte, requesting advice and trouble shooting steps, detailing the steps I had taken to test my PSU and my overall rig.
At the same time, I started researching any known issues with this range of GPU’s. I was horrified to discover many incidents where GPU’s, cables and other components had melted following installation of 4xxx GPU’s. My heart sunk. Many of the horror stories pointed to the supplied Y cable as the source. GPU makers pointed towards incorrectly seated motherboards, gpus and or cables. I can confirm that I had triple checked my connections and listened in each case for the ‘click’ as firm connections were made.
I ordered a Corsair 600W PCIe 5.0 12VHPWR Type-4 PSU Power cable , directly from Corsair. It was been shipped from France and would take a week.
6 days passed and two events occurred on the same day. 1). My Corsair 12VHPWR cable arrived and 2). I received a response from Gigabyte. Essentially, Gigabyte told me to check my GPU (which I had already told Gigabyte I had done) or contact the supplier of the GPU (Amazon)).
So, I installed the Corsair 12VHPWR cable I had just purchased, connecting the GPU to the power supply. There was no need for me to triple check all the connections as the connectors would only connect in the correct way. I gingerly turned on power to the PSU and pressed the start button on the PC….. … the fan on the PSU slowly started to turn …. lights appeared within the GPU, numbers started to appear on the motherboard led display and the boot sequence started.
My PC…came to life… with the sound of the 'Hallelujah Chorus' reverberating in the background.
My Summary.
1. The response from Gigabyte was totally unacceptable.
2. In my opinion, the Y cable supplied by Gigabyte was inappropriate for the intended purpose.
3. Gigabytes response was seriously underwhelming and totally ignored the elephant in the room… ie the Y power cable.
My advice to anyone installing a modern, fairly high powered GPU is to triple check the connections needed to support the GPU and procure a single, fit for purpose, cable assembly which connects the GPU directly to the PSU, without any 3rd party connectors. Make sure you have a modern PSU of sufficient wattage and make sure you have sufficient spare slots in your PSU to cater for twin connections if required to power your GPU.
Ps. I have noticed a very pleasing improvement in Lr responsiveness…... very timely… as the third event which occurred on the same day was the release of a new Lr version, with the new GPU focused noise reduction and mask features. Serendipity ??? ‘Sweet’.
I am posting this story in the hope that others will not have to experience the pain and anguish I have done and help avoid a potential catastrophic meltdown of lots of very expensive components. I know every config is different ... but the bottom line is that modern GPUs are power hungry and need cables fit for purpose.
Here is the cable I purchased directly from Corsair. In my opinion, this should be supplied with GPU's which need dual PSU power slots.
"This is a relatively long discussion. It is worth reading the discussion in sequence, as posted."
To assist people returning to this discussion, the following are direct links to frequently used posts.
Post #20 contains a link to a raw file to use, if you wish to compare the performance of your rig to others.
https://www.lightroomqueen.com/comm...e-nvidia-rtx-4070-ti-12gb.47572/#post-1315509
Post #30 contains a summary of Denoise performance stats for a range of GPU’s and CPU’s from readers of this post.
https://www.lightroomqueen.com/comm...ia-rtx-4070-ti-12gb.47572/page-2#post-1315545
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I am posting this on the Lightroom Classic forum, as I think it is most relevant to Classic users.
With GPU prices softening and the release of the 4xxx range I decided to purchase the Gigabyte Nvidia RTX 4070 Ti 12GB. I was aware, before purchase that I needed a min 750 Watt GPU. I already had a recently purchased Corsair RM850X model and plenty of spare Corsair supplied compatible internal power cables.
The GPU was tricky to install because of its size and the need to install an awkward bracket support system. The GPU was supplied with a Y cable, where the single end was plugged into the GPU and the two other ends plugged into separate power cables (not supplied by Gigabyte) which were then plugged into the PSU. I used Corsair cables, supplied with my PSU.
I triple checked that I had the polarity of all the cable connections correct, square pins fitted into square holes and rounded pins fitted into rounded holes etc. When I powered up my PC….. nothing happened. Nothing. No lights, no fans starting up, no status numbers on the internal motherboard display. Totally dead... and no clue as to what the problem might be. I feared the worst.
I completely disassembled my PC and removed the Corsair power supply. I then followed the Corsair instructions on how to test the PSU. All tests passed and all (28 I think) pin outs had exactly the correct voltage settings.
I rebuilt my rig, this time reinstalling my old GPU. With much relief, it booted perfectly. I was worried that many of my main components, such as motherboard, processor, PSU, etc had been toasted.
I sent a query to Gigabyte, requesting advice and trouble shooting steps, detailing the steps I had taken to test my PSU and my overall rig.
At the same time, I started researching any known issues with this range of GPU’s. I was horrified to discover many incidents where GPU’s, cables and other components had melted following installation of 4xxx GPU’s. My heart sunk. Many of the horror stories pointed to the supplied Y cable as the source. GPU makers pointed towards incorrectly seated motherboards, gpus and or cables. I can confirm that I had triple checked my connections and listened in each case for the ‘click’ as firm connections were made.
I ordered a Corsair 600W PCIe 5.0 12VHPWR Type-4 PSU Power cable , directly from Corsair. It was been shipped from France and would take a week.
6 days passed and two events occurred on the same day. 1). My Corsair 12VHPWR cable arrived and 2). I received a response from Gigabyte. Essentially, Gigabyte told me to check my GPU (which I had already told Gigabyte I had done) or contact the supplier of the GPU (Amazon)).
So, I installed the Corsair 12VHPWR cable I had just purchased, connecting the GPU to the power supply. There was no need for me to triple check all the connections as the connectors would only connect in the correct way. I gingerly turned on power to the PSU and pressed the start button on the PC….. … the fan on the PSU slowly started to turn …. lights appeared within the GPU, numbers started to appear on the motherboard led display and the boot sequence started.
My PC…came to life… with the sound of the 'Hallelujah Chorus' reverberating in the background.
My Summary.
1. The response from Gigabyte was totally unacceptable.
2. In my opinion, the Y cable supplied by Gigabyte was inappropriate for the intended purpose.
3. Gigabytes response was seriously underwhelming and totally ignored the elephant in the room… ie the Y power cable.
My advice to anyone installing a modern, fairly high powered GPU is to triple check the connections needed to support the GPU and procure a single, fit for purpose, cable assembly which connects the GPU directly to the PSU, without any 3rd party connectors. Make sure you have a modern PSU of sufficient wattage and make sure you have sufficient spare slots in your PSU to cater for twin connections if required to power your GPU.
Ps. I have noticed a very pleasing improvement in Lr responsiveness…... very timely… as the third event which occurred on the same day was the release of a new Lr version, with the new GPU focused noise reduction and mask features. Serendipity ??? ‘Sweet’.
I am posting this story in the hope that others will not have to experience the pain and anguish I have done and help avoid a potential catastrophic meltdown of lots of very expensive components. I know every config is different ... but the bottom line is that modern GPUs are power hungry and need cables fit for purpose.
Here is the cable I purchased directly from Corsair. In my opinion, this should be supplied with GPU's which need dual PSU power slots.
Last edited by a moderator:
