AI Denoise speed test with different NIDIA GPU on 10 years old Windows PC

Here is an update including my original test results in 2023 on my now 10+ years young PC system.

Test Method:

Images: DP Review's A7RV 60MP RAW files. Five cycles per test. Disk Cleanup with all items checked in Cleanup system files performed after each reboot per test.  Stopwatch timed, not Lightroom Classic estimated time. Power level including all monitor and accessories power Consumption. 

Test System:

Intel i7-6700K 4.0GHz (not supported by Windows 11)

Asus Z170-A w/newest BIOS, TPM 2.0 (XMP & above 4G Decoding enabled in BIOS)

32GB DDR4 2400MHz CLS 13 RAM (8GB x 4)

WD Black 1TB M2 SSD (less than 40% usage) & 2 x 4TB Samsung SSD

Win 10 Pro

BenQ SW2700PT 1440p H/W 10-bit IPS display

Antec P190 550W+650W=1200W case w/2x80+ PSU (17 years young)

GTX1060 6GB GDDR5: 1-pic: 159.10s pics: 1569s Idle: 108W Average: 234W Peak: 279W
RTX3060 OC 12GB GDDR6: 1-pic: 32.08s 10-pic: Not tested Power: Not tested
RTX3060Ti 8GB GDDRX6: 1-pic: 26.90s 10-pic: Not tested Power: Not tested
RTX3070 OC 8GB GDDR6: 1-pic 25.18s 10-pic: 221.73s Power: Idle 117W Average: 378W Peak: 585W
RTX4060Ti 8GB GDDR6: 1-pic: 26.97s 10-pic: 247.62s Power: Idle: 108W Average: 288W Peak: 369W
RTX4070 12GB GDDRX6: 1-pic: 20.08s 10-pic: 180.2s Not tested Power: Not tested
RTX4070 OC 12GB GDDRX6: 1-pic: 19:74s 10-pic: 175.61s Power: Idle: 117W Average 324W Peak: 414W
RTX4070Ti OC 12GB GDDRX6: 1-pic: 17.29s 10-pic: 148.81s Idle: 117W average: 369W Peak: 441W
RTX4080 OC 16GB GDDRX6: 1-pic: 13.88s 10-pic: 120s Idle: 126W Average: 423W Peak: 576W

System upgrades in 2025:

Windows 11 Pro (on a non-supported CPU!) with Hardware-accelerated GPU scheduling "On" in System > Display > Graphics

64GB DDR4 3200 CLS17 RAM (16GB x 4)

100W ATX 3.1 PSU w/ PCIE 5.1 connection

LG 32" 4K 32GS95UE W-OLED 10-bit monitor

Lightroom Classic 14.4

- RTX4070Ti OC 12GB GDDRX6: 1-pic: 13.41s 10-pic 139.88s Idle: 117W Average 266W Peak: 362W

- RTX5090 OC 32GB GDDR7: 1-pic: 6.4s 10-pic: 75.47s Idle: 126W average: 621W Peak: 743W

The Denois time decreased on the RTX 4070Ti OC with Lighroom Classic 14.4 due to time saved not needing to create and write DNG file to the SSD (~28%).  After upgrade to the RTX 5090 OC, not only the AI Denois is 100%+ faster but also all AI related process as well as loading 2000+ images per folder, Masking, add/remove brush in Mask and overall work flow.  only time there is a few seconds of delay is when reloading an image that has been Denoised previously but works fine without any lagging once loaded in Development mode even with many mask layers.  Based on the RTX4070Ti 12GB OC GPU performance hit after the v14.4 update I would highly recommend not to get a GPU that has less than 16GB VRAM for future proof as Lightroom Classic continues to increase GPU VRAM usage on every new version.