# RAM available not used by Pix4D Mapper processing **URL:** \ **Category:** PIX4Dmapper Questions/Troubleshooting\ **Created:** [December 15, 2022, 7:13pm UTC](https://community.pix4d.com/t/ram-available-not-used-by-pix4d-mapper-processing/24903 "2022-12-15T19:13:09Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![jerome\_lemahieu](https://avatars.discourse-cdn.com/v4/letter/j/839c29/32.png) [@jerome\_lemahieu](https://community.pix4d.com/u/jerome_lemahieu)\ **Post date:** [December 15, 2022, 7:13pm UTC](https://community.pix4d.com/t/ram-available-not-used-by-pix4d-mapper-processing/24903/1 "2022-12-15T19:13:09Z")
**Hi everyone. 😀** In first sorry for the longger of the post… I am using Pix4Discovery license for trial. I have a question about the use of ram by the PIX4D PROCESSING versus the physical RAM available on my DELL Workstation T3620 MT. The processor of this workstation is INTEL XEON CPU E3-1240V6 3.5GHz, 3504 MHz, 4 COEURS, 8 LOGICAL PROCESSORS My workstation has 64Go of physical RAM installed and detected (compatibility with processor ok) . My graphic card is nvidia quadro k2200 (CUDA compatible) And the storage is a Samsung SSD 980 1TB (PCIe M2) **So here is my issue : Actually I increased the RAM memory from 16 Go to 64 Go but it seems that the difference is not use…** **- Pix4d detects 64 Go of RAM well (i see it in the notification & ressouces screen)** \*\*- The cursor in pix4d maximum ressources available for processing is 64 Go. \*\* \*\*However in the Windows Task Manager, PIX4D uses only 4.5 Go… in the same time, other processing use (with PIX4D) only 16 Go. \*\* \*\*Why PIX4DMAPPER doesn’t use the remaining 44 Go ? Is it normal ? The time traitment could be reduced ? \*\* (It works for a project with 200 photos, but the process takes 2 hours for step 1 and 2… ) **Has anyone encountered this type of problem before?** **Thank you in advance for the answers** Jérôme ---
**Author:** ![Daniele\_Lecci](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/daniele_lecci/32/9493_2.png) [@Daniele\_Lecci](https://community.pix4d.com/u/Daniele_Lecci)\ **Post date:** [December 16, 2022, 8:13am UTC](https://community.pix4d.com/t/ram-available-not-used-by-pix4d-mapper-processing/24903/2 "2022-12-16T08:13:05Z")
Hi @jerome_lemahieu, Welcome to the Pix4D Community! 🎉 Thank you for sharing your question. The usage of different hardware components by PIX4Dmapper highly depends on the task the software is performing at a given step (it might also vary depending on the sub-step). Here two examples: - During _Step 1_ you will have a **high usage of CPU** (and GPU if available) but a **low usage of RAM**. - On the contrary, for _Step 3_, you will have a **low usage of CPU** (no usage of GPU) and a **high usage of RAM**. You can find additional information in this article: > **[Hardware components usage when processing with PIX4Dmapper](https://support.pix4d.com/hc/en-us/articles/202559519-Hardware-components-usage-when-processing-with-PIX4Dmapper)** > >   > > Information: > > For more information about the use of the GPU: Use of the GPU in PIX4Dmapper. > For recommendations for a Hardware and Software Configuration: How to decide which hardware to buy. > Fo... Happy mapping! ---
**Author:** ![jerome\_lemahieu](https://avatars.discourse-cdn.com/v4/letter/j/839c29/32.png) [@jerome\_lemahieu](https://community.pix4d.com/u/jerome_lemahieu)\ **Post date:** [December 16, 2022, 2:20pm UTC](https://community.pix4d.com/t/ram-available-not-used-by-pix4d-mapper-processing/24903/3 "2022-12-16T14:20:21Z")
Hi @Daniele_Lecci Thank you for your answer and analysis. So in my case, it looks like nothing is wrong and the software will make the selection based on the hardware configuration (cpu gpu ram ssd) 😀 I’ll try with the mensual licence 😉 ---
**Author:** ![Daniele\_Lecci](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/daniele_lecci/32/9493_2.png) [@Daniele\_Lecci](https://community.pix4d.com/u/Daniele_Lecci)\ **Post date:** [December 16, 2022, 2:42pm UTC](https://community.pix4d.com/t/ram-available-not-used-by-pix4d-mapper-processing/24903/4 "2022-12-16T14:42:22Z")
Hi @jerome_lemahieu, Thank you for your answer. PIX4Dmapper is not making selections based on your hardware configuration (besides choosing GPU for step 1 when available). PIX4Dmapper uses different components depending mainly on the processing step. For example, some parts of the process can be done in parallel when are independent between each other (these parts can be processed on a GPU) but need to be processed in series when a subsequent process depends on the outcome of the previous one. You can find a Hardware case study here: > **[Hardware case study](https://support.pix4d.com/hc/en-us/articles/115003928846-Hardware-case-study#gsctab=0)** > > This article explains the use of key computer components by Pix4Dmapper. A series of experiments has been performed to determine the impact of hardware configuration as a function of input images a... ---
**Author:** ![jerome\_lemahieu](https://avatars.discourse-cdn.com/v4/letter/j/839c29/32.png) [@jerome\_lemahieu](https://community.pix4d.com/u/jerome_lemahieu)\ **Post date:** [December 16, 2022, 7:00pm UTC](https://community.pix4d.com/t/ram-available-not-used-by-pix4d-mapper-processing/24903/5 "2022-12-16T19:00:59Z")
Really very clear. Thank you 👍 👍 👍 ---
**Author:** ![Chris\_Putnam](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/chris_putnam/32/4946_2.png) [@Chris\_Putnam](https://community.pix4d.com/u/Chris_Putnam)\ **Post date:** [January 14, 2023, 9:59pm UTC](https://community.pix4d.com/t/ram-available-not-used-by-pix4d-mapper-processing/24903/6 "2023-01-14T21:59:08Z")
Pix won’t max out ram for 200 photo projects. It’ll use more when more images are available.