Datasheet for local AI49 models98 GPUsData read 2026-09-25
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From the RX 7900 XTX 24 GB to the RTX 5090 32 GB: what changes for local AI

+8 GB of VRAM (24 → 32 GB). Of 49 models, 4 newly run well, 9 get a better file or stop offloading, and 36 stay the same.

24 GB GDDR6 · 384-bit · 960 GB/s · RDNA 332 GB GDDR7 · 512-bit · 1792 GB/s · BlackwellData 2026-09-25
4newly run well
9better file
36no change
+8GB more VRAM

01Newly runs well

ModelOn the RX 7900 XTX 24 GBOn the RTX 5090 32 GBNeeded
LTX-2 (19B)Runs Q6_KRuns well Q8_025.2 GB
LTX-2.3 (22B)Runs Q6_KRuns well Q8_027.6 GB
LTX-2.5 (22B)Runs Q6_KRuns well Q8_028.4 GB
MiniMax H3 PrunedRuns Q6_KRuns well FP826.8 GB

“Runs well” means a 16-bit or 8-bit file fits entirely in VRAM.

02A better file, or less offloading

ModelOn the RX 7900 XTX 24 GBOn the RTX 5090 32 GBNeeded
FLUX.1 [dev]Runs well Q8_0Runs well 16-bit26.1 GB
FLUX.1 [schnell]Runs well Q8_0Runs well 16-bit26.1 GB
FLUX.1 Kontext [dev]Runs well Q8_0Runs well 16-bit26.4 GB
FLUX.1 Krea [dev]Runs well Q8_0Runs well 16-bit26.1 GB
FLUX.1 Fill [dev]Runs well Q8_0Runs well 16-bit26.4 GB
FLUX.2 [dev]Runs Q4_K_MRuns Q6_K30.7 GB
Krea 2 (Turbo)Runs well Q8_0Runs well 16-bit28.9 GB
HunyuanVideo (13B, original)Runs well Q8_0Runs well 16-bit29.9 GB
MiniMax H3 (33B)Tight Q3_K_MRuns Q5_K_M29.7 GB

03No change in what fits

FLUX.2 klein 9B Runs wellFLUX.2 klein 4B Runs wellQwen-Image Runs wellQwen-Image-Edit Runs wellQwen-Image 2.1 Runs wellZ-Image Turbo Runs wellZ-Image Runs wellIdeogram 4 Runs wellBoogu-Image Runs wellERNIE-Image Runs wellHiDream-O1 Runs wellMage-Flow Runs wellLumina 2.0 Runs wellHiDream-I1 Full Runs wellHiDream-I1 Runs wellSD 3.5 Large Runs wellSD 3.5 Medium Runs wellChroma1-HD Runs wellSDXL Runs wellIllustrious / Pony Runs wellSD 1.5 Runs wellHunyuanImage 2.1 Runs wellWan 2.1 14B Runs wellWan 2.1 1.3B Runs wellWan 2.1 I2V 480P Runs wellWan 2.1 I2V 720P Runs wellWan VACE 14B Runs wellWan 2.2 T2V Runs wellWan 2.2 I2V Runs wellWan 2.2 5B Runs wellWan 2.2 Animate Runs wellWan Animate 2 Runs wellWan 2.2 S2V Runs wellSCAIL-2 Runs wellLTX-Video 13B Runs wellHunyuanVideo 1.5 Runs well

Same verdict and same file on both cards. Speed can still differ.

04Speed and features

Memory bandwidth goes from 960 to 1792 GB/s (×1.87). For models that fit on both cards, bandwidth and compute decide the speed; this ratio is a rough first guide, not a benchmark. The RTX 5090 32 GB computes FP8 natively, so FP8 files run faster there than on the RX 7900 XTX 24 GB, which only uses them to save memory. It also adds FP4 (NVFP4) hardware, for models that ship NVFP4 files. Switching from AMD to NVIDIA also changes the software route (CUDA, ROCm or XPU) and which custom nodes work; see the AMD and Intel guide.