Ryzen 9 9900X vs Ryzen 5 PRO 7645

Aggregate performance score

Ryzen 5 PRO 7645
2023
6 cores / 12 threads, 65 Watt
17.39
Ryzen 9 9900X
2024
12 cores / 24 threads, 120 Watt
35.23
+103%

Ryzen 9 9900X outperforms Ryzen 5 PRO 7645 by a whopping 103% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 5 PRO 7645 and Ryzen 9 9900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking373108
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data63.60
Market segmentServerDesktop processor
Power efficiency24.8527.27
Architecture codenameRaphael (2023−2024)Granite Ridge (2024)
Release date13 June 2023 (1 year ago)15 August 2024 (less than a year ago)
Launch price (MSRP)no data$499

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 5 PRO 7645 and Ryzen 9 9900X basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores6 (Hexa-Core)12 (Dodeca-Core)
Threads1224
Base clock speed3.8 GHz4.4 GHz
Boost clock speed5.1 GHz5.6 GHz
L1 cache64 KB (per core)80 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache32 MB (shared)64 MB (shared)
Chip lithography5 nm4 nm
Die size71 mm22x 70.6 mm2
Maximum core temperatureno data95 °C
Maximum case temperature (TCase)61 °Cno data
Number of transistors6,570 million16,630 million
64 bit support++
Unlocked multiplier-+

Compatibility

Information on Ryzen 5 PRO 7645 and Ryzen 9 9900X compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketAM5AM5
Power consumption (TDP)65 Watt120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 5 PRO 7645 and Ryzen 9 9900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataSMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 5 PRO 7645 and Ryzen 9 9900X are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 5 PRO 7645 and Ryzen 9 9900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon GraphicsAMD Radeon Graphics

Peripherals

Specifications and connection of peripherals supported by Ryzen 5 PRO 7645 and Ryzen 9 9900X.

PCIe version5.05.0
PCI Express lanes2424

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Ryzen 5 PRO 7645 17.39
Ryzen 9 9900X 35.23
+103%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Ryzen 5 PRO 7645 27106
Ryzen 9 9900X 54920
+103%

Gaming performance

Pros & cons summary


Performance score 17.39 35.23
Recency 13 June 2023 15 August 2024
Physical cores 6 12
Threads 12 24
Chip lithography 5 nm 4 nm
Power consumption (TDP) 65 Watt 120 Watt

Ryzen 5 PRO 7645 has 84.6% lower power consumption.

Ryzen 9 9900X, on the other hand, has a 102.6% higher aggregate performance score, an age advantage of 1 year, 100% more physical cores and 100% more threads, and a 25% more advanced lithography process.

The Ryzen 9 9900X is our recommended choice as it beats the Ryzen 5 PRO 7645 in performance tests.

Be aware that Ryzen 5 PRO 7645 is a server/workstation processor while Ryzen 9 9900X is a desktop one.


Should you still have questions on choice between Ryzen 5 PRO 7645 and Ryzen 9 9900X, ask them in Comments section, and we shall answer.

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AMD Ryzen 5 PRO 7645
Ryzen 5 PRO 7645
AMD Ryzen 9 9900X
Ryzen 9 9900X

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


5 3 votes

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Questions & comments

Here you can ask a question about Ryzen 5 PRO 7645 or Ryzen 9 9900X, agree or disagree with our judgements, or report an error or mismatch.