RTX 5070 vs RTX 4090 in 2026: Real Performance Gap

The RTX 5070 does not match the RTX 4090 in normal gaming. Across independent reviews, the RTX 4090 is roughly 45 to 63 percent faster than the RTX 5070 at native resolution, with the gap widest at 4K and in ray tracing where the 5070’s 12GB of memory runs out. The claim that the 5070 equals a 4090 only holds in a narrow case: when the 5070 runs DLSS 4 Multi Frame Generation and the 4090 is compared without it, which inflates the displayed frame rate but not the responsiveness or image of the game.

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Where the “5070 Equals 4090” Claim Comes From

At its January 2025 announcement, NVIDIA’s presentation said the GeForce RTX 5070 delivers GeForce RTX 4090 performance. The footnote that mattered was the method: the comparison used DLSS 4 with Multi Frame Generation on the 5070, which can insert up to three AI-generated frames between each rendered frame, against a 4090 using the older single-frame generation. Under those conditions the frame counter on a 5070 can show a number similar to a 4090.

A frame counter is not the whole experience, though. Generated frames are interpolated from rendered ones, so they do not respond to your mouse or controller. A game rendering at 40 real frames per second and displayed at 160 still feels like a 40 fps game in terms of input delay, with extra latency added by the frame generation pipeline. A native 4090 producing 90 real frames responds more than twice as quickly. The result is that the headline claim is true for a number on a screen and false for how the game plays.

Specification Comparison

The raw hardware difference shows why. The figures come from NVIDIA’s published specifications for both cards.

The RTX 4090 has 2.7 times as many CUDA cores, twice the VRAM, a bus twice as wide and 50 percent more bandwidth. Clock speeds are almost identical, so the core count translates directly into throughput. No generational improvement in architecture closes a gap of that size for a card in the 250W class.

What Independent Benchmarks Show

Several outlets measured the two cards without generated frames. Their numbers vary because of game selection, but they agree on direction.

The consensus across game-based tests is that the RTX 5070 is about 30 to 40 percent slower than the RTX 4090 in everyday play, which is the same thing as saying the 4090 is 45 to 65 percent faster. The wide range is normal; it depends on how much each game stresses shaders, memory capacity and ray tracing.

Why the gap grows in some games

• VRAM limits. At 4K with ray tracing and high textures, 12GB can be exceeded, and the 5070 stutters while the 4090’s 24GB does not. TechSpot recorded a case where the 4090 was several times faster because the 5070 had run out of memory.
• Ray tracing load. The 4090 has 128 RT cores versus 48, so heavy path-traced scenes widen the gap.
• High resolution. At 4K, shader and bandwidth limits dominate and the 4090’s larger resources show most clearly.

Why the gap shrinks in others

• Esports and lighter games. At 1080p in competitive titles, both cards are held back by the CPU and the gap narrows.
• Games with DLSS 4 support. Multi Frame Generation raises the 5070’s displayed rate significantly, which narrows the number gap without narrowing the playability gap.
• Games under 12GB. If the scene fits in memory, the pure shader ratio applies and the difference is the smallest.

Worked Example: What Frame Generation Really Does

Take a demanding game at 4K with ray tracing. Using the PC Guide pattern, the 4090 might render about 109 frames per second natively, while the 5070 renders about 66 under similar conditions. Now apply 4x Multi Frame Generation to the 5070, which in theory multiplies displayed frames by up to four, though overhead reduces the true gain to around three times. The 5070 shows roughly 190 to 200 frames per second on the counter, higher than the native 4090’s 109.

The rendered frame time tells a different story. At 66 rendered frames per second each frame takes about 15 milliseconds, and frame generation adds buffering delay on top, so end-to-end latency lands in the range of 40 to 60 milliseconds depending on the game and Reflex settings. The native 4090 at 109 fps has frame times near 9 milliseconds and latency of roughly 25 to 35 milliseconds. If the 4090 is also given its own frame generation, it reaches higher numbers still. So on equal terms the 4090 wins in both smoothness and responsiveness, and the 5070 only leads when it uses a feature the comparison card is denied.

Where the RTX 5070 Is the Smarter Choice

None of this makes the RTX 5070 a poor card. It is a strong 1440p GPU that uses 44 percent less power than the 4090 and fits in a normal case with a 650W power supply. Its advantages are practical:

• Availability. The 5070 is a current product with a warranty, while the 4090 is out of production and increasingly found on the used market, where condition and age vary.
• Power and heat. A 250W card keeps rooms cooler and cases quieter than a 450W card.
• Newer features. It supports Multi Frame Generation, the latest NVENC and DisplayPort 2.1b, which the 4090 lacks in the same form.
• Lower platform cost. It needs a smaller power supply, a smaller case and less cooling.
• 1440p performance. At 1440p it plays nearly every modern game at high settings, often with DLSS to reach high refresh rates.

Where the RTX 4090 Still Wins

• 4K gaming at high settings. The extra shader power and 24GB of memory keep the card comfortable at 4K.
• Heavy ray tracing and path tracing. The larger RT core count and memory suit demanding scenes.
• Content creation and local AI. 24GB of VRAM opens up larger scenes, models and video projects than 12GB allows.
• Longevity. More memory and more cores mean the card will stay useful as games grow.
• Frame generation headroom. A higher base frame rate gives frame generation a better foundation and lower latency.

Decision Matrix

What About the Cards Between Them?

If you want 4090-class performance with newer silicon, the real answer is the RTX 5080 or RTX 5090 rather than the 5070. The table shows how the Blackwell stack lines up against the 4090.

The RTX 5080 is the nearest current card by performance, but it has 16GB rather than 24GB, so the 4090 retains an advantage in memory-bound work. The RTX 5090 is the current successor, though supply of it has been tight, which affects what you can actually buy.

Power, Heat and Running Cost Compared

The difference in board power, 250W against 450W, affects more than the electricity bill. A 450W card dumps 200W more heat into the room, which in a small office can raise the temperature noticeably during long sessions, and it needs a case with strong airflow and a larger cooler. The 4090 coolers are typically three to four slots thick, while many RTX 5070 cards are two-slot designs that fit mid-tower and compact cases without modification.

A simple running-cost calculation shows the scale. Assume 20 hours of gaming per week with the GPU at about 85 percent of its rated power. The RTX 5070 averages roughly 212W, using about 4.25 kWh per week or 221 kWh per year. The RTX 4090 averages roughly 382W, using about 7.65 kWh per week or 398 kWh per year. At an electricity rate of 0.15 per kWh, that is about 33 per year for the 5070 and about 60 per year for the 4090. The 27 difference is real but small next to the purchase decision, so power cost should be a tiebreaker rather than a reason to choose a slower card.

Memory Capacity: The Spec That Ages Differently

Raw speed is only part of the long-term picture. The 5070’s 12GB is adequate for today’s 1440p play, but newer games and higher texture packs are pushing recommended capacities upward, and 4K with ray tracing already exceeds 12GB in several titles. The 4090’s 24GB leaves substantial margin for several years of growth and also serves workloads that go beyond games.

• 3D rendering and video editing. Large scenes and high-resolution timelines with effects can consume well over 12GB. A card that runs out of memory either fails the job or falls back to much slower system memory.
• Local AI. Language and image models are limited by VRAM first. A 24GB card can hold many quantized mid-sized models; a 12GB card is restricted to smaller ones or heavier quantization.
• Texture modding. High-resolution texture packs for open-world games use several additional gigabytes.
• VR. Headsets render two high-resolution views and benefit from both shader power and memory.

In other words, the 4090’s lead grows when the job leaves ordinary gaming at 1440p. For a player who only wants high frame rates in popular games at that resolution, the lead is less relevant, which is why the right choice depends on the workload instead of the leaderboard.

Image Quality and Latency: What Generated Frames Cost

Multi Frame Generation is an impressive technology, and it is worth being fair about both its strengths and its costs. It makes slower cards feel smoother on high-refresh displays, which matters most in single-player games where a controller or mouse feels fine at 60 rendered frames per second and the display benefits from more motion clarity. NVIDIA Reflex, which synchronises the CPU and GPU to reduce queueing, offsets some of the added latency.

The costs show up in three places. First, input latency rises compared with the same rendered frame rate without generation, because the pipeline holds a frame back to interpolate. Second, fast motion and thin details such as fences, hair and particle effects can show artefacts on generated frames, although the transformer-based model in DLSS 4 reduced these. Third, the technique works best when the base frame rate is already at least 50 to 60 fps. A card that renders only 25 fps natively will look smoother but still feel sluggish, and that is exactly the situation a weaker GPU can fall into at 4K with ray tracing.

Because the RTX 4090 can run the same DLSS 4 upscaling and its own frame generation, the fair comparison is between the two cards under identical settings. Under those settings, the faster card keeps its lead.

How to Judge Marketing Claims Like This One

1. Read the footnote. Identify what settings each card used. Differences in DLSS mode or frame generation make a comparison meaningless.
2. Look for native results. Independent reviewers publish numbers with generated frames off, which reflect real performance.
3. Check 1 percent lows. Average fps can hide stutter; the 1 percent low shows how smooth the game feels.
4. Compare memory. If a game uses more than a card’s VRAM, the card is not comparable, regardless of core speed.
5. Check latency. Tools such as NVIDIA’s frame analysis utilities show end-to-end latency with and without frame generation.

Frequently Asked Questions

Is the RTX 5070 as fast as the RTX 4090?

No, not in native gaming. Independent reviews show the RTX 4090 is roughly 45 to 63 percent faster at 1080p to 4K. The claim of equal performance relies on Multi Frame Generation, which raises displayed frame rates without changing how responsive the game feels.

Does DLSS 4 make the RTX 5070 match a 4090?

It can make the frame counter match or exceed a 4090 running without frame generation. It does not make the experience match, because generated frames do not respond to input and add some latency. A 4090 using its own frame generation still comes out ahead.

Which is better for 1440p gaming?

The RTX 5070 is a good 1440p card and costs less to run, while the RTX 4090 is far more powerful than 1440p requires. If you only play at 1440p and do not need 24GB of memory, the 5070 is the more sensible choice, particularly if you value warranty coverage and lower power use.

Should I replace an RTX 4090 with an RTX 5070?

No. You would lose substantial performance and half of your VRAM. Owners of a 4090 should consider upgrading only to an RTX 5090 or waiting for a clearly faster generation.

How much power supply do I need for each card?

NVIDIA recommends 650W for the RTX 5070 and 850W for the RTX 4090. The 4090 also needs a 16-pin connector or adapter, and a power supply with good transient handling is important for stability.

Is a used RTX 4090 worth buying instead of a new RTX 5070?

For 4K gaming, heavy ray tracing or AI work, a used 4090 in good condition offers far more performance. For 1440p gaming, the new 5070 gives a warranty, lower power use and newer features. Inspect any used card carefully, including the power connector, and prefer sellers who offer returns.

Bottom Line

The RTX 5070 and RTX 4090 are not equivalent. The 5070 is a capable, efficient 1440p card with strong new software features, and the 4090 is a much larger GPU that remains faster by a wide margin in real play. Treat the equal-performance claim as a statement about frame counters with generated frames, and choose by resolution, memory needs, power budget and whether you want a new card with a warranty.