SYSTEM ANALYZER

Rate My PC: Intel Core i5-12400T + NVIDIA GeForce RTX 5090

Get a comprehensive performance analysis of your gaming rig with detailed benchmarks, bottleneck detection, and upgrade recommendations

Build Configuration

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PROCESSOR (CPU)

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GRAPHICS CARD (GPU)

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86 Score

Top 14% Ranking

86 / 100

HIGH-END

Power Build

Top 14% of systems. Excellent for 1440p Ultra or 4K High gaming.

1440p Ultra4K High

System Balance Analysis

CPU vs GPU performance ratio

CPU Bottleneck

CPU

75%

GPU

98%

Your CPU is limiting system performance. Consider upgrading to a faster processor to better utilize your GPU.

PROCESSOR

Intel Core i5-12400T

4,019 Benchmark Score

Top 25% Market Ranking

View Full Specs →

GRAPHICS CARD

NVIDIA GeForce RTX 5090

79,842 Benchmark Score

Top 2% Market Ranking

View Full Specs →

Market Position

How your build compares to others

Budget

0-30

Mid-Range

30-60

High-End

60-85

Enthusiast

85-100

Your Build

Game Performance Benchmarks

Real-world 4K FPS in popular titles

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Performance Insights

Tips to maximize your system

Strong Performance

Excellent for 1440p gaming. Most games will run at high/ultra settings smoothly.

Bottleneck Detected

CPU Bottleneck - Upgrading the weaker component will improve overall performance.

Compatible Games See what you can play Compare CPUs Find upgrades Compare GPUs Find upgrades

Performance Tiers Explained

90-100

Ultimate

4K Ultra gaming, VR ready, ray tracing enabled, professional workloads

4K 60+ FPS VR Ready

70-89

High-End

1440p Ultra or 4K High settings, excellent for modern AAA titles

1440p Ultra 4K High

50-69

Mid-Range

1080p Ultra or 1440p Medium, great value for most gamers

1080p Ultra 1440p Med

30-49

Entry Level

1080p Medium settings, suitable for eSports and older titles

1080p Med eSports

0-29

Legacy

Basic gaming, older titles, consider upgrading for modern games

720p-1080p Low Older Games

Intel Core i5-12400T pairs with the NVIDIA GeForce RTX 5090 in a desktop build that lands at the 75th percentile overall. The CPU is a 6-core, 12-thread Alder Lake-S part with a 35W TDP, while the GPU is a 575W Blackwell 2.0 flagship. This is a stark contrast in class and capability, and the benchmark data confirms a highly asymmetric pairing where the GPU vastly outclasses the processor.

CPU Analysis

The Intel Core i5-12400T is a 12th-generation Alder Lake-S desktop processor with 6 cores and 12 threads. It operates at a base clock of 1800 MHz and boosts up to 4.20 GHz. The chip is built on Intel's 10 nm process node with a die size of 163 mm². Cache hierarchy consists of 80 KB L1 per core, 1.25 MB L2 per core, and 18 MB of shared L3 cache. Memory support includes both DDR4 and DDR5 across a dual-channel bus. The CPU integrates UHD Graphics 730, though this pairing relies on the discrete GPU. It uses the Intel Socket 1700 platform and supports PCIe Gen 5 with 20 lanes from the CPU.

Cinebench R23 multi-core score is 13234 points, while single-core reaches 1868. These scores place the CPU at the 57th percentile among all processors. In Cinebench R20, the multi-core result is 5558 and single-core is 784. Geekbench results show 7144 multi-core and 2044 single-core. The average benchmark score across all tests is 4019.

Relative to nearest rivals, the i5-12400T is nearly identical to the AMD Ryzen 5 PRO 4655G, which scores 4010 on average, a delta of just 0.2%. The Intel Xeon E5-2698B v3 is 0.4% behind at 4004, while the Intel Xeon E-2336 trails by 0.9% at 3985. The only rival ahead is the Intel Xeon E-2278G at 4052, which is 0.8% faster. These tight deltas indicate the i5-12400T sits in a crowded mid-range performance band.

For real workloads, the 13234 Cinebench R23 multi-core score supports productivity tasks like compiling code or batch image processing, but this is not a high-end rendering chip. The 1868 single-core score is modest, meaning everyday responsiveness is adequate but not exceptional. The 35W TDP is the standout feature — this is a low-power part that trades peak performance for efficiency, making it more suitable for thermally constrained or always-on systems than for sustained heavy loads.

Benchmark Performance

The NVIDIA GeForce RTX 5090 delivers extraordinary benchmark results. In 3DMark Steel Nomad DX12, it scores 18355. Geekbench OpenCL reaches 334370 and Vulkan hits 376728. Passmark G3D is 39650, with GPU compute at 26756. The average benchmark score is 79842, placing it at the 92nd percentile among all GPUs.

The GPU's nearest rivals show how close the top tier is. The NVIDIA Tesla P100 PCIe 16 GB scores 79605, a delta of 0.3%. The Tesla P100 PCIe 12 GB is at 79396, 0.6% behind. The AMD Radeon RX 6850M XT scores 78940, trailing by 1.1%. The only competitor ahead is the AMD Radeon Pro Vega 64X at 80959, which leads by 1.4%. The RTX 5090's 92nd percentile position confirms it operates near the absolute top of the GPU hierarchy.

The combined picture is one of extreme imbalance. The CPU sits at the 57th percentile while the GPU is at the 92nd, and the overall build lands at the 75th percentile. In practical terms, the RTX 5090's raw compute — 104.8 TFLOPS of FP32 performance, 32 GB of GDDR7 memory on a 512-bit bus with 1.79 TB/s bandwidth — dwarfs what the i5-12400T can feed it. The CPU's 4019 average benchmark score is roughly 5% of the GPU's 79842 average, creating a situation where the processor will be the limiting factor in nearly every GPU-bound scenario.

Upgrade Path and Platform

The i5-12400T uses Intel Socket 1700, which supports DDR4 and DDR5 memory in dual-channel configuration. The platform provides PCIe Gen 5 with 20 lanes from the CPU, and the RTX 5090 connects via PCIe 5.0 x16. The GPU's power requirements are substantial: 575W TDP with a suggested PSU of 950W. The CPU's 35W TDP is negligible by comparison, so the power supply is chosen almost entirely for the graphics card.

A sensible next upgrade would focus on the processor, since the RTX 5090 is already at the top of its class. The 35W TDP of the i5-12400T means the motherboard and cooling solution are likely sized for low-power operation, so any CPU upgrade would need to account for additional thermal and power headroom. The Socket 1700 platform supports higher-tier 12th-generation processors, though the exact models are not specified in the data. Memory bandwidth may also become a factor — the dual-channel DDR4/DDR5 support is adequate for the current CPU, but a faster processor would benefit from higher-speed memory.

The GPU's dimensions are 304 mm in length, 137 mm in height, and 40 mm in width, with a dual-slot design and a single 16-pin power connector. These physical requirements mean the chassis must accommodate a long, thick card. The RTX 5090's 750 mm² die and 92,200 million transistors on TSMC's 5 nm process make it a physically large and power-hungry component. The suggested 950W PSU provides headroom for the GPU's 575W TDP plus the rest of the system, but there is little room for additional high-power components without exceeding that recommendation.

Who Should Build It

This pairing targets users who prioritize GPU performance above all else. Gamers at 4K resolution will benefit most, as the RTX 5090's 92nd percentile ranking and 32 GB memory handle high-resolution textures and ray tracing without issue. Content creators working with large video files or complex 3D scenes will see massive acceleration in GPU-accelerated tasks, though CPU-bound rendering will be held back by the i5-12400T.

Developers compiling large codebases will find the CPU adequate for moderate workloads, but the 57th percentile performance means build times will not be a strength. Students and small business workstations could use this build for GPU compute tasks like machine learning inference or scientific simulation, where the RTX 5090's 104.8 TFLOPS FP32 and 26756 Passmark GPU compute score provide substantial throughput. However, for general office work, the CPU's modest single-core score of 1868 in Cinebench R23 offers no advantage over cheaper, more balanced systems.

The launch MSRP for the CPU is $192, and for the GPU it is 1,999 USD. The combination is appropriate for users who already own a high-end GPU or plan to upgrade the CPU later. It is less suitable for budget-conscious builders or those who need balanced performance across both CPU and GPU workloads.

Gaming Performance

No measured FPS rows exist for this exact combination, and the FACT PACK contains no measuredFps data. All FPS discussion is therefore estimated from the benchmark scores. The RTX 5090's 92nd percentile ranking and 18355 3DMark Steel Nomad score indicate exceptional rasterization and ray tracing performance. At 1080p or 1440p, the i5-12400T's 1868 single-core score will likely bottleneck the GPU, capping frame rates below what the RTX 5090 could otherwise deliver. At 4K, the GPU becomes the primary driver, and the CPU's lower core count becomes less relevant.

The RTX 5090's 1.79 TB/s memory bandwidth and 32 GB GDDR7 capacity handle ultra-high texture settings and 4K assets without spilling into system memory. The 104.8 TFLOPS FP32 throughput supports high frame rates in demanding titles. However, games that rely heavily on CPU physics or draw-call processing will expose the i5-12400T's limits. The 6-core, 12-thread configuration is sufficient for current titles, but future games optimized for 8 or more cores may show larger performance gaps.

Estimated frame rates at 4K ultra settings would be high for the GPU, but the CPU's 57th percentile position means minimum frame rates could suffer in CPU-intensive scenes. At 1080p, the bottleneck shifts entirely to the processor, and the RTX 5090 would be underutilized. The data does not support precise FPS figures, so these estimates should be treated as directional rather than definitive.

FAQ

Q: What is the CPU's core and thread count?

A: The Intel Core i5-12400T has 6 cores and 12 threads.

Q: How much memory does the RTX 5090 have?

A: The GPU has 32 GB of GDDR7 memory on a 512-bit bus with 1.79 TB/s bandwidth.

Q: What is the CPU's TDP and the GPU's TDP?

A: The CPU has a 35W TDP, while the GPU has a 575W TDP. The suggested PSU for the system is 950W.

Q: What socket does the CPU use?

A: The Intel Core i5-12400T uses the Intel Socket 1700.

Q: What is the GPU's percentile ranking?

A: The RTX 5090 is at the 92nd percentile among all GPUs, with an average benchmark score of 79842.

Q: Does the CPU support ECC memory?

A: No, ECC memory is not supported.

Q: What is the RTX 5090's FP32 performance?

A: The GPU delivers 104.8 TFLOPS of FP32 performance.

Usage Scenarios

High-refresh gaming at 1080p or 1440p will be limited by the CPU's single-core performance of 1868 in Cinebench R23. The RTX 5090's 92nd percentile ranking suggests it can push very high frame rates, but the i5-12400T's 57th percentile position means the processor will cap those rates in many titles. At 4K, the GPU becomes the bottleneck, and the system can deliver smoother high-resolution gameplay.

Streaming benefits from the RTX 5090's dedicated hardware encoders and 680 tensor cores, which offload encoding from the CPU. The 12 threads of the i5-12400T are sufficient for streaming software, but the 35W TDP limits sustained multi-core performance under combined gaming and encoding loads.

Video editing in applications that leverage GPU acceleration will see dramatic speedups from the RTX 5090's 104.8 TFLOPS and 32 GB memory. Export times shrink significantly, but timeline scrubbing and effects that rely on CPU preview will be slower than a higher-end processor.

3D rendering in GPU-accelerated engines will be exceptionally fast, with the RTX 5090's 18355 3DMark Steel Nomad score indicating strong compute performance. CPU-based rendering will be modest, with the i5-12400T's 13234 Cinebench R23 multi-core score representing a mid-range result.

Software development sees adequate performance for compilation and testing, with the 6 cores and 12 threads handling typical workloads. The 57th percentile ranking means build times are average, but the low 35W TDP keeps power draw and heat output minimal during long coding sessions.

Student and office work is over-served by this hardware. The CPU's 1868 single-core score handles document editing and web browsing, while the RTX 5090's power and cost are unnecessary for these tasks. The system's 92nd percentile GPU performance is wasted on such workloads.

Build Overview

This is a desktop-class build combining the Intel Core i5-12400T with the NVIDIA GeForce RTX 5090. The CPU is a 6-core, 12-thread Alder Lake-S processor at the 57th percentile, while the GPU is a Blackwell 2.0 flagship at the 92nd percentile. The combined percentile is 75th, reflecting the imbalance between the two components.

The i5-12400T is a low-power part with a 35W TDP, designed for efficiency rather than peak performance. The RTX 5090 is a 575W monster with 92,200 million transistors on a 750 mm² die, representing the upper echelon of consumer graphics. The 32 GB GDDR7 memory and 1.79 TB/s bandwidth make it a professional-grade compute device as much as a gaming card.

This build is a GPU-first configuration. The RTX 5090 dominates the system's capabilities and cost, while the CPU serves as a modest companion. The 75th combined percentile reflects the GPU's high standing pulling up the CPU's lower position. For users who need maximum GPU throughput and are willing to upgrade the processor later, this pairing is coherent. For balanced performance, the data shows significant headroom for a stronger CPU.

Balance and Bottleneck

The i5-12400T and RTX 5090 are severely mismatched. The CPU's 4019 average benchmark score sits at the 57th percentile, while the GPU's 79842 average is at the 92nd. The GPU outperforms the CPU by a factor of nearly 20 in average benchmark scores, creating a clear bottleneck in the processor.

In CPU-bound workloads like single-threaded applications, the i5-12400T's 1868 Cinebench R23 single-core score limits overall responsiveness. The GPU cannot compensate for CPU limitations in tasks like game logic, physics simulation, or code compilation. The 57th percentile position means roughly 43% of CPUs are faster, and the RTX 5090's 92nd percentile means it is faster than 92% of GPUs.

In GPU-bound workloads such as 4K gaming, rendering, or compute tasks, the RTX 5090 is the limiting factor only in the sense that it sets the maximum achievable performance. The CPU's 6 cores and 12 threads are sufficient to feed the GPU at higher resolutions where the GPU's 18355 3DMark Steel Nomad score becomes the dominant factor. The 35W TDP CPU does not throttle under load, but it also does not provide the multi-core headroom that a higher-end processor would offer.

The FPS scaling evidence, while not measured, supports this analysis. At 1080p, the CPU would cap frame rates due to its modest single-core performance. At 4K, the GPU's 1.79 TB/s bandwidth and 104.8 TFLOPS become the primary drivers, and the CPU bottleneck diminishes. The 92nd percentile GPU paired with a 57th percentile CPU means the practical bottleneck is the processor in most scenarios, with the GPU only becoming the limiting factor at very high resolutions or in compute-heavy tasks.

Rate My PC: Intel Core i5-12400T + NVIDIA GeForce RTX 5090

Power Build

System Balance Analysis

Intel Core i5-12400T

NVIDIA GeForce RTX 5090

Market Position

Game Performance Benchmarks

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

Performance Insights

Strong Performance

Bottleneck Detected

Performance Tiers Explained

Ultimate

High-End

Mid-Range

Entry Level

Legacy

CPU Analysis

Benchmark Performance

Upgrade Path and Platform

Who Should Build It

Gaming Performance

FAQ

Usage Scenarios

Build Overview

Balance and Bottleneck

4K Gaming Performance

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

1440p Gaming Performance

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

1080p Gaming Performance

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

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