GPUsAreMagic
@nemez.net
Helping make GPUs faster, hobby semicon/FPGAs and too much Minecraft. Opinions are my own, nowadays I mostly rant. Also on https://x.com/GPUsAreMagic Website: https://nemez.net/
And a Minecraft server test - 1.21.5 default settings, flying around in spectator mode at maximum speed - its keeping up nicely.
Flying through new terrain: 65-90W (~70W typical)
Flying through already generated terrain: 43W
Flying through new terrain: 65-90W (~70W typical)
Flying through already generated terrain: 43W
June 13, 2025 at 5:13 PM
And a Minecraft server test - 1.21.5 default settings, flying around in spectator mode at maximum speed - its keeping up nicely.
Flying through new terrain: 65-90W (~70W typical)
Flying through already generated terrain: 43W
Flying through new terrain: 65-90W (~70W typical)
Flying through already generated terrain: 43W
Some more unscientific ArrowLake tests:
TrueNAS 25.04.1 QuickSync in Jellyfin works out of the box. NPU is missing firmware (hopefully soon?).
Added 3 old (power hungry) SSDs for a test pool.
Idle: 38W at wall
Transcoding (HEVC to AV1): 65-70W
Serving the transcoded video: 40W
TrueNAS 25.04.1 QuickSync in Jellyfin works out of the box. NPU is missing firmware (hopefully soon?).
Added 3 old (power hungry) SSDs for a test pool.
Idle: 38W at wall
Transcoding (HEVC to AV1): 65-70W
Serving the transcoded video: 40W
June 13, 2025 at 5:13 PM
Some more unscientific ArrowLake tests:
TrueNAS 25.04.1 QuickSync in Jellyfin works out of the box. NPU is missing firmware (hopefully soon?).
Added 3 old (power hungry) SSDs for a test pool.
Idle: 38W at wall
Transcoding (HEVC to AV1): 65-70W
Serving the transcoded video: 40W
TrueNAS 25.04.1 QuickSync in Jellyfin works out of the box. NPU is missing firmware (hopefully soon?).
Added 3 old (power hungry) SSDs for a test pool.
Idle: 38W at wall
Transcoding (HEVC to AV1): 65-70W
Serving the transcoded video: 40W
Some quick power scaling data I collected.
Think I'll settle on a 100W power limit for the NAS.
Think I'll settle on a 100W power limit for the NAS.
June 12, 2025 at 12:07 PM
Some quick power scaling data I collected.
Think I'll settle on a 100W power limit for the NAS.
Think I'll settle on a 100W power limit for the NAS.
Finally received the motherboard for the 265K yesterday.
After all the fixes since launch this is even better than I expected/remembered from last year.
20W from the wall without PCIe cards at idle-ish (vs like 50W+ for AM5). More MT than 9700X at about half the wall power (50W PL1/2), neat.
After all the fixes since launch this is even better than I expected/remembered from last year.
20W from the wall without PCIe cards at idle-ish (vs like 50W+ for AM5). More MT than 9700X at about half the wall power (50W PL1/2), neat.
June 12, 2025 at 12:07 PM
Finally received the motherboard for the 265K yesterday.
After all the fixes since launch this is even better than I expected/remembered from last year.
20W from the wall without PCIe cards at idle-ish (vs like 50W+ for AM5). More MT than 9700X at about half the wall power (50W PL1/2), neat.
After all the fixes since launch this is even better than I expected/remembered from last year.
20W from the wall without PCIe cards at idle-ish (vs like 50W+ for AM5). More MT than 9700X at about half the wall power (50W PL1/2), neat.
Hey, thanks!
I don't have a blog on this, mainly because IMO I don't have much to say other "learn to recognize patterns well" and "learn some low level chip design stuff", the latter to get an idea of how stuff works and might be laid out.
And yep, you can kinda see the dual MC, but no clear cut.
I don't have a blog on this, mainly because IMO I don't have much to say other "learn to recognize patterns well" and "learn some low level chip design stuff", the latter to get an idea of how stuff works and might be laid out.
And yep, you can kinda see the dual MC, but no clear cut.
May 10, 2025 at 11:50 AM
Hey, thanks!
I don't have a blog on this, mainly because IMO I don't have much to say other "learn to recognize patterns well" and "learn some low level chip design stuff", the latter to get an idea of how stuff works and might be laid out.
And yep, you can kinda see the dual MC, but no clear cut.
I don't have a blog on this, mainly because IMO I don't have much to say other "learn to recognize patterns well" and "learn some low level chip design stuff", the latter to get an idea of how stuff works and might be laid out.
And yep, you can kinda see the dual MC, but no clear cut.
I guess if you're on Intel Arc... use 28 chunk render distance? ❓❔❓❔
(repeatable, I reran 24/28/32 chunks 4 times each because it didn't make sense, and it still doesn't make sense)
(repeatable, I reran 24/28/32 chunks 4 times each because it didn't make sense, and it still doesn't make sense)
March 26, 2025 at 10:16 PM
I guess if you're on Intel Arc... use 28 chunk render distance? ❓❔❓❔
(repeatable, I reran 24/28/32 chunks 4 times each because it didn't make sense, and it still doesn't make sense)
(repeatable, I reran 24/28/32 chunks 4 times each because it didn't make sense, and it still doesn't make sense)
Back when I tested the RX 6600 vs GTX 1660 in Minecraft 2y ago, AMD was firmly ahead, but seems like something in MC changed a bit and AMD possibly reintroduced some CPU overhead in the driver.
NVIDIA is now ahead again at "normal" and especially "high" render distance.
NVIDIA is now ahead again at "normal" and especially "high" render distance.
March 26, 2025 at 6:04 PM
Back when I tested the RX 6600 vs GTX 1660 in Minecraft 2y ago, AMD was firmly ahead, but seems like something in MC changed a bit and AMD possibly reintroduced some CPU overhead in the driver.
NVIDIA is now ahead again at "normal" and especially "high" render distance.
NVIDIA is now ahead again at "normal" and especially "high" render distance.
Minecraft Patrix 256x resourcepack + OptiFine runs on the RX 9070 XT. AMD upped the hardware limitation of 16K texture size.
This combo just crashes on startup on any previous AMD GPU. (It still needs 25GB+ of VRAM so the 9070 XT cant really "run" it but hey, progress!)
This combo just crashes on startup on any previous AMD GPU. (It still needs 25GB+ of VRAM so the 9070 XT cant really "run" it but hey, progress!)
March 10, 2025 at 10:20 PM
Minecraft Patrix 256x resourcepack + OptiFine runs on the RX 9070 XT. AMD upped the hardware limitation of 16K texture size.
This combo just crashes on startup on any previous AMD GPU. (It still needs 25GB+ of VRAM so the 9070 XT cant really "run" it but hey, progress!)
This combo just crashes on startup on any previous AMD GPU. (It still needs 25GB+ of VRAM so the 9070 XT cant really "run" it but hey, progress!)
Some quick non-scientific RX 9070 XT video encoder tests.
Two pictures from the receiving end of a discord screenshare from the 9070 XT. 1440p60 at about 9-10mbit since I have nitro, both during movement.
Looks perfectly usable for a stream, full res in gdrive link in reply 🧵
Two pictures from the receiving end of a discord screenshare from the 9070 XT. 1440p60 at about 9-10mbit since I have nitro, both during movement.
Looks perfectly usable for a stream, full res in gdrive link in reply 🧵
March 9, 2025 at 11:14 PM
Some quick non-scientific RX 9070 XT video encoder tests.
Two pictures from the receiving end of a discord screenshare from the 9070 XT. 1440p60 at about 9-10mbit since I have nitro, both during movement.
Looks perfectly usable for a stream, full res in gdrive link in reply 🧵
Two pictures from the receiving end of a discord screenshare from the 9070 XT. 1440p60 at about 9-10mbit since I have nitro, both during movement.
Looks perfectly usable for a stream, full res in gdrive link in reply 🧵
AMD StrixHalo annotation!
I quite like the memory/MALL layout, but it was really annoying to annotate. Also dual media engines!
Photos provided to me by x.com/Kurnalsalts
Full res available at nemez.net/die
I quite like the memory/MALL layout, but it was really annoying to annotate. Also dual media engines!
Photos provided to me by x.com/Kurnalsalts
Full res available at nemez.net/die
February 25, 2025 at 7:27 PM
AMD StrixHalo annotation!
I quite like the memory/MALL layout, but it was really annoying to annotate. Also dual media engines!
Photos provided to me by x.com/Kurnalsalts
Full res available at nemez.net/die
I quite like the memory/MALL layout, but it was really annoying to annotate. Also dual media engines!
Photos provided to me by x.com/Kurnalsalts
Full res available at nemez.net/die
VFIO on the Asrock Z790 Livemixer:
✅All slots separate IOMMU groups properly
✅PCIe card SR-IOV works
✅iGPU SR-IOV works (with out of tree i915)
⁉️Not possible to set the iGPU as the primary output if there is a dGPU
As expect of a modern Intel chipset, nice VFIO workstation.
✅All slots separate IOMMU groups properly
✅PCIe card SR-IOV works
✅iGPU SR-IOV works (with out of tree i915)
⁉️Not possible to set the iGPU as the primary output if there is a dGPU
As expect of a modern Intel chipset, nice VFIO workstation.
December 30, 2024 at 4:57 PM
VFIO on the Asrock Z790 Livemixer:
✅All slots separate IOMMU groups properly
✅PCIe card SR-IOV works
✅iGPU SR-IOV works (with out of tree i915)
⁉️Not possible to set the iGPU as the primary output if there is a dGPU
As expect of a modern Intel chipset, nice VFIO workstation.
✅All slots separate IOMMU groups properly
✅PCIe card SR-IOV works
✅iGPU SR-IOV works (with out of tree i915)
⁉️Not possible to set the iGPU as the primary output if there is a dGPU
As expect of a modern Intel chipset, nice VFIO workstation.