The upscaling war has never been this intense. NVIDIA’s DLSS 4.5 just dropped with Dynamic Multi Frame Generation and 6X mode, while AMD’s FSR 4.1 brings ML-based upscaling to RX 9000 cards — and is preparing to open up to competitor GPUs. We’ve tested both across real games like Pragmata, Crimson Desert, and Black Myth: Wukong. Here’s the definitive comparison for April 2026.
Updated April 2026.
DLSS 4.5: What’s New
Released March 31, 2026, DLSS 4.5 is NVIDIA’s latest and most powerful rendering suite. It builds on DLSS 4 (launched January 2025 with RTX 50-series) with several major upgrades:
- Dynamic Multi Frame Generation (Dynamic MFG) — automatically adjusts generated frame count based on your display’s refresh rate and base FPS
- MFG 6X mode — generates 5 additional frames per rendered frame (up from 4X max in DLSS 4)
- 2nd Generation Transformer Model for Super Resolution — Preset M (default) and Preset L (maximum quality)
- Auto Shader Compilation — reduces stutter during shader compilation
- Improved frame pacing — smoother frame delivery
The 2nd-gen transformer is a significant upgrade. Digital Foundry tested Preset L (the heaviest model) and found it produces “remarkably clean images” when upscaling 1080p to 4K. It improves temporal stability, reduces ghosting, and handles fine details like foliage, hair, and fabric textures better than the original DLSS 4 model. The performance cost is minimal — just 2-3% overhead on RTX 40/50 series thanks to FP8 acceleration on Tensor cores.
DLSS 4.5 GPU Compatibility
| Feature | RTX 20/30 | RTX 40 | RTX 50 |
|---|---|---|---|
| Super Resolution | ✅ (performance penalty) | ✅ | ✅ |
| Ray Reconstruction | ✅ | ✅ | ✅ |
| Frame Generation (2X) | ❌ | ✅ | ✅ |
| MFG (3X-6X) | ❌ | ❌ | ✅ |
| Dynamic MFG | ❌ | ❌ | ✅ |
Key point: DLSS 4.5 Super Resolution works on ALL RTX GPUs — that’s 400+ titles via the NVIDIA App override. But frame generation and MFG remain RTX 40/50 exclusive. This is NVIDIA’s hardware moat.
FSR 4.1: AMD’s ML Upscaling Arrives
Released March 20, 2026, FSR 4.1 is AMD’s latest ML-based upscaling update. It’s an incremental but meaningful upgrade over FSR 4 (“Redstone”):
- Sharper image quality for ML-based upscaling — finer details, better reconstruction
- Smoother camera motion — reduced jitter and shimmer during camera pans
- Better Ray Regeneration 1.1 — improved ray tracing denoising with better contrast, shadows, and reflections
- Reduced ghosting — better temporal stability
- Better particle preservation — fire, smoke, and magic effects stay cleaner
The algorithm is shared with Sony’s updated PSSR — AMD and Sony are collaborating on upscaling technology, which is an interesting development for console-PC comparisons.
FSR 4.1 GPU Compatibility
| Feature | RX 6000 | RX 7000 | RX 9000 |
|---|---|---|---|
| FSR 4.1 ML Upscaling | ❌ | ❌ | ✅ |
| FSR 3.1 (non-ML) | ✅ | ✅ | ✅ |
| Frame Generation (2X) | ✅ | ✅ | ✅ |
| Ray Regeneration 1.1 | ❌ | ❌ | ✅ |
| AFMF 2.1 (driver-level) | ✅ | ✅ | ✅ |
The critical limitation: FSR 4/4.1 ML upscaling is exclusively RX 9000 series. This is a major competitive disadvantage vs DLSS 4.5 which works on all RTX GPUs. AMD has 85+ games supported via driver override — compared to NVIDIA’s 400+ titles. The gap is significant.
FSR Redstone: Opening Up to Competitor GPUs
This is potentially the biggest story in upscaling right now. AMD’s FSR Redstone technology compiles ML models into compute shader code (HLSL), rather than requiring dedicated AI/ML hardware like NVIDIA’s Tensor cores. This means:
- The compiled shader code is compatible with any DX12/Vulkan-capable GPU
- No requirement for dedicated ML acceleration hardware
- The approach converts pre-trained ML models into optimized compute shaders
AMD SVP Jack Huynh has publicly discussed the cross-vendor potential. PC Gamer reported: “We can confidently say from Hall’s comments that it does not seem like there are any technical reasons why AMD’s FSR Redstone couldn’t run on Nvidia and indeed Intel GPUs.”
But: Technical compatibility doesn’t equal commercial availability. AMD hasn’t committed to officially supporting FSR on other GPUs yet. FSR 5/Redstone is expected to have “official third-party support, including RTX and Intel Arc GPUs” — but that’s a future promise, not a current reality.
In the meantime, the community tool OptiScaler lets users swap upscalers in games — including running FSR 4 on non-AMD GPUs with varying success.
Head-to-Head: Image Quality
The Consensus
Multiple independent sources agree: DLSS 4.5 maintains a clear image quality lead over FSR 4/4.1, but the gap has narrowed significantly compared to FSR 3.1 vs DLSS 3.
| Source | Verdict |
|---|---|
| TechSpot | “DLSS 4.5 surpasses AMD’s FSR 4 in upscaling quality” |
| XDA Developers | “AMD FSR 4 vs. Nvidia DLSS 4: Shockingly close” |
| SlashGear | “DLSS 4 is not only newer, but it is also better than FSR 4 in raw image quality” |
| TechSpot (FSR 4.1) | “Sharper Images, But DLSS Still Leads” |
Where DLSS 4.5 Wins
- Temporal stability — less shimmer and flicker, especially in motion
- Fine detail reconstruction — hair, foliage, fabric textures are cleaner
- UI element clarity — mini maps and HUD elements stay sharp
- Ghosting reduction — fast-moving objects have fewer trails
- Performance and Ultra Performance modes — DLSS is clearly better at lower internal resolutions
- Ray Reconstruction — more mature and higher quality than Ray Regeneration 1.1
Where FSR 4.1 Is Competitive
- Quality mode at 4K — the gap is “shockingly close” (XDA)
- Static scenes — minimal motion scenarios look nearly identical
- Camera motion smoothness — improved significantly in 4.1
- Particle effects — better preservation of fire, smoke, magic effects in 4.1
Where FSR 4.1 Still Falls Behind
- Performance and Ultra Performance modes — DLSS 4.5 is clearly superior
- Fast motion scenes — more ghosting and temporal instability
- Lower internal resolutions — the quality gap widens as input quality decreases
- Game support — 85+ vs 400+ titles is a massive ecosystem difference
Head-to-Head: Performance
Black Myth: Wukong (4K, Path Traced, RTX 5090)
| Configuration | FPS |
|---|---|
| Native (no upscaling) | ~29 |
| DLSS 4.5 Quality + MFG 4X | ~185 |
| DLSS 4.5 Quality + MFG 6X | ~246 |
MFG 6X delivers up to 33% more FPS than MFG 4X at 4K. That’s the difference between 185 and 246 FPS — a massive uplift for high-refresh displays.
Crimson Desert (4K, RT, RX 9070 XT)
FSR 4.1 Quality mode delivers significant performance uplift on AMD hardware. With FSR 4.1 enabled, the RX 9070 XT can compete with or exceed the RTX 5090 at native 4K in some scenarios. Ray Regeneration 1.1 significantly improves RT quality in this title.
General Performance
TechSpot found no performance difference between FSR 4.1 and FSR 4 on the RX 9070 XT — the 4.1 update is purely an image quality improvement. DLSS 4.5 shows “enhanced performance at 1440P” compared to FSR 4 according to Wccftech testing.
Latency: The Frame Generation Trade-Off
This is the most important thing to understand about frame generation: it does NOT reduce input latency. Generated frames are interpolated — they don’t contain new input data. The game still processes input at the base frame rate.
DLSS 4.5 MFG Latency
| MFG Mode | Average System Latency |
|---|---|
| No frame generation | Baseline |
| MFG 2X | Slight increase |
| MFG 4X | Moderate increase |
| MFG 6X | 29-33ms (just a couple ms more than 4X) |
The key insight: the latency jump from 4X to 6X is minimal — “just a couple of milliseconds” per PC Guide testing. The bigger concern is ensuring your base FPS is high enough before enabling any frame generation.
Practical Recommendations
| Use Case | Recommendation |
|---|---|
| Competitive FPS (CS2, Valorant) | NEVER use frame generation |
| Single-player RPGs | Frame gen is great — latency is tolerable |
| 4K path-traced gaming | MFG 4X-6X is transformative if base FPS ≥ 40 |
| 1080p high-refresh | Upscaling alone is usually sufficient |
| VR | Frame generation is NOT suitable |
Always enable NVIDIA Reflex (or AMD Anti-Lag) when using any frame generation mode. Without latency reduction, frame generation feels sluggish.
Game Support: The Ecosystem Gap
| Metric | DLSS 4.5 | FSR 4.1 |
|---|---|---|
| Total upscaling titles | 400+ | 85+ (driver override) |
| Frame generation titles | 250+ | ~85 |
| MFG (3X+) titles | 250+ | 0 (not yet available) |
| Cross-vendor support | NVIDIA only | AMD only (Redstone may change) |
The ecosystem gap is DLSS’s biggest practical advantage. With 400+ titles and driver-level override for any existing DLSS game, NVIDIA users have far more options. AMD’s 85+ driver override games is growing but still far behind.
Key 2026 Titles
| Game | DLSS 4.5 | FSR 4.1 |
|---|---|---|
| Pragmata | ✅ | FSR 3.1 (no 4.1) |
| Crimson Desert | ✅ | ✅ |
| Death Stranding 2 | ✅ | ✅ |
| Diablo 4: Lord of Hatred | ✅ | FSR 3.1 |
| Elder Scrolls IV: Oblivion Remastered | ✅ | FSR 3.1 |
| God of War Ragnarök | ✅ | FSR 3.1 |
| Clair Obscur: Expedition 33 | ✅ | ✅ |
| 007: First Light | ✅ | TBD |
Quality Tiers: Internal Resolution Comparison
Both upscalers use the same quality tier naming, but the internal rendering resolution differs:
| Quality Tier | 4K Internal Resolution | 1440p Internal Resolution |
|---|---|---|
| Quality | 2560×1440 (67%) | 1706×960 |
| Balanced | 2220×1250 (58%) | 1480×833 |
| Performance | 1920×1080 (50%) | 1280×720 |
| Ultra Performance | 1280×720 (33%) | 960×540 |
DLSS 4.5 handles lower internal resolutions significantly better than FSR 4.1. If you’re using Performance or Ultra Performance modes, DLSS is the clear winner. At Quality mode, the gap is much smaller.
VRAM Requirements
DLSS 4.5 Super Resolution uses approximately 86MB of VRAM overhead (per NVIDIA). Frame Generation adds roughly 307MB. The 2nd-gen transformer model is slightly heavier than the 1st-gen, but FP8 acceleration on RTX 40/50 keeps the cost at 2-3% performance overhead.
Warning for RTX 20/30 users: The 2nd-gen transformer model can use up to 2X more VRAM on older GPUs that lack FP8 support. If you’re on an RTX 2060 or 3060, you may need to use a lower DLSS quality tier to compensate.
FSR 4.1 has roughly 20% lower VRAM overhead than DLSS 4.5, which is a small advantage for memory-constrained systems.
The Verdict: Which Should You Use?
If You Have an RTX 50-Series Card
Use DLSS 4.5. It’s the best upscaling solution available, period. Dynamic MFG is transformative for single-player games, and the 2nd-gen transformer model provides the cleanest image quality. MFG 3X-4X is the sweet spot for most scenarios.
If You Have an RTX 40-Series Card
Use DLSS 4.5 Super Resolution + Frame Generation (2X). You get the excellent upscaling quality and standard frame gen. You don’t get MFG, but 2X FG is still a major boost. In Pragmata, you can also combine DLSS SR with FSR 3.1 FG for the best of both worlds.
If You Have an RTX 20/30-Series Card
Use DLSS 4.5 Super Resolution. No frame generation for you, but the upscaling quality is still excellent — and significantly better than FSR 3.1. Watch VRAM usage with the new transformer model.
If You Have an RX 9000 Card
Use FSR 4.1. It’s your best option and the quality is close to DLSS at Quality mode. FSR 3.1 Frame Generation works well. Ray Regeneration 1.1 is a bonus for RT games. You can also try OptiScaler to inject DLSS if a specific game supports it.
If You Have an RX 6000/7000 Card
Use FSR 3.1. You don’t get ML upscaling, but FSR 3.1 is still decent. AFMF 2.1 (driver-level frame gen) works in any game but has higher latency than in-game FG.
Looking Ahead: DLSS 5 and FSR 5
NVIDIA announced DLSS 5 at GTC 2026 (March 2026), calling it “the GPT moment for graphics.” It goes beyond upscaling and frame generation to add neural rendering — generating photorealistic lighting and material detail using generative AI. Launches Fall 2026 for RTX 50 series.
AMD is preparing FSR 5/Redstone with official third-party GPU support from the start. If AMD delivers on this promise, it could fundamentally change the upscaling landscape — a truly open, cross-vendor ML upscaler would be a game-changer.
For now, DLSS 4.5 is the king. But the race is closer than it’s ever been, and FSR’s potential openness could be the disruptor NVIDIA doesn’t want.
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