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NVIDIA RTX 5090 Benchmark Leak: Is 4K 144Hz Path Tracing Finally Here?

Alleged synthetic 3DMark benchmarks indicate up to 65% rasterization performance improvements over RTX 4090.

Sarah Jenkins
Sarah JenkinsHardware Lead
Oct 22, 2026•6 min read
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NVIDIA RTX 5090 Benchmark Leak: Is 4K 144Hz Path Tracing Finally Here?

The Blackwell Architecture Leap

Leaked engineering samples and technical specifications for NVIDIA's upcoming flagship graphics card — the GeForce RTX 5090 — have sent shockwaves through the hardware enthusiast community. Built on TSMC's customized 4NP node featuring the Blackwell GB202 silicon, the RTX 5090 represents Jensen Huang's most aggressive generational push into real-time path tracing.

Key Leaked Specifications: - **CUDA Cores**: 21,760 (up from 16,384 on RTX 4090) - **Memory Configuration**: 32 GB GDDR7 on a massive 512-bit bus - **Memory Bandwidth**: Staggering 1,792 GB/s (near double the RTX 4090) - **Total Board Power (TBP)**: Approximately 500-600W via 12V-2x6 connector

Real-World Implications for Cyberpunk and GTA VI

While 65% synthetic improvements in Time Spy Extreme look impressive on bar charts, the true game-changer is the memory subsystem. With 32GB of ultra-fast GDDR7, modern path-traced titles like *Cyberpunk 2077: Phantom Liberty* and *Alan Wake 2* can run at native 4K with full Ray Reconstruction without suffering from VRAM pressure or texture paging stutters.

Filed Under:#RTX5090#NVIDIA#Blackwell#Hardware
Sarah Jenkins

Sarah Jenkins

Hardware Lead

Covering technical deep-dives, industry shifts, and hardware engineering across PC and console ecosystems. GamerGrid verified journalist.

Discussion (1)

H
HardwareHackerOct 22, 2026

A 512-bit bus with 32GB GDDR7 is an absolute monster. The memory bandwidth alone will eliminate all VRAM bottlenecks in 4K path tracing. Better start saving for a 1200W ATX 3.1 power supply though.