{"slug":"rtx-4090-vs-rtx-4080)","question":"RTX 4090 vs RTX 4080","answer":"The RTX 4090 delivers 23% more CUDA cores (16,384 vs 9,728) and 28% higher memory bandwidth (1,092 GB/s vs 576 GB/s), making it significantly faster for professional workloads and high-end gaming, while the RTX 4080 offers better value at $600 less with still-excellent performance for 4K gaming.","answer_curated":true,"verdict":"Choose the RTX 4090 if you run professional 3D rendering, AI training, or competitive 4K gaming with max settings—the 23% performance gain justifies the cost for content creators. Choose the RTX 4080 if you want excellent 4K gaming at 120+ fps and professional work at a $400 lower price point with 45% better power efficiency.","keyDifferences":[{"label":"CUDA Cores","winner":"a","entityAValue":"16,384 cores","entityBValue":"9,728 cores"},{"label":"Memory Bandwidth","winner":"a","entityAValue":"1,092 GB/s","entityBValue":"576 GB/s"},{"label":"4K Gaming Performance (avg fps)","winner":"a","entityAValue":"165-185 fps (Ultra)","entityBValue":"120-140 fps (Ultra)"},{"label":"MSRP Launch Price (USD)","winner":"b","entityAValue":"$1,599","entityBValue":"$1,199"},{"label":"Power Consumption (TDP)","winner":"b","entityAValue":"575W","entityBValue":"320W"}],"winner":{"slug":"nvidia-rtx-4090","name":"NVIDIA RTX 4090"},"confidence":"high","entities":[{"name":"NVIDIA RTX 4090","slug":"nvidia-rtx-4090","url":"https://www.aversusb.net/entity/nvidia-rtx-4090","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/nvidia-rtx-4090"},{"name":"NVIDIA RTX 4080","slug":"nvidia-rtx-4080","url":"https://www.aversusb.net/entity/nvidia-rtx-4080","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/nvidia-rtx-4080"}],"faqs":[{"question":"Is the RTX 4090 worth $400 more than the RTX 4080?","answer":"For professional work (3D rendering, AI training, video production), yes—the 23% performance boost and 8GB extra VRAM justify the cost. For gaming, no—the RTX 4080 delivers 120-140 fps at 4K Ultra settings, while the 4090 reaches 165-185 fps, a difference most gamers won't notice. The 4090 wins on value only if your workload truly demands maximum compute performance."},{"question":"What power supply do I need for each GPU?","answer":"RTX 4090 requires a quality 1000W or 1200W PSU due to its 575W TDP and system overhead. RTX 4080 needs a 750W PSU minimum with good 12V rail (320W TDP). If you only have a 750W PSU, the 4080 is your only option; upgrading to 1000W+ for the 4090 adds $150-250 to total cost."},{"question":"Which GPU is better for AI/machine learning?","answer":"RTX 4090 wins decisively with 1,457 TFLOPS tensor performance vs the 4080's 743 TFLOPS—that's 96% more compute power for LLM training, image generation, and neural networks. The 24GB VRAM also accommodates larger batch sizes. If you're training models, the 4090 is the clear choice; the 4080 suffices only for inference and light fine-tuning."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/rtx-4090-vs-rtx-4080)","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/rtx-4090-vs-rtx-4080)), The RTX 4090 delivers 23% more CUDA cores (16,384 vs 9,728) and 28% higher memory bandwidth (1,092 GB/s vs 576 GB/s), making it significantly faster for professional workloads and high-end gaming, whi","dateModified":"2026-07-07T07:12:19.456Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/rtx-4090-vs-rtx-4080)","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/rtx-4090-vs-rtx-4080)","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/rtx-4090-vs-rtx-4080)","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/rtx-4090-vs-rtx-4080)#claimreview","url":"https://www.aversusb.net/compare/rtx-4090-vs-rtx-4080)","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"RTX 4090 vs RTX 4080","reviewBody":"The RTX 4090 delivers 23% more CUDA cores (16,384 vs 9,728) and 28% higher memory bandwidth (1,092 GB/s vs 576 GB/s), making it significantly faster for professional workloads and high-end gaming, while the RTX 4080 offers better value at $600 less with still-excellent performance for 4K gaming.","datePublished":"2026-07-07T07:12:18.575Z","dateModified":"2026-07-07T07:12:19.456Z","reviewRating":{"@type":"Rating","ratingValue":5,"worstRating":1,"bestRating":5,"alternateName":"High Confidence"},"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B","url":"https://www.aversusb.net"},"itemReviewed":{"@type":"WebPage","@id":"https://www.aversusb.net/compare/rtx-4090-vs-rtx-4080)","url":"https://www.aversusb.net/compare/rtx-4090-vs-rtx-4080)","name":"RTX 4090 vs RTX 4080","inLanguage":"en-US"}}}