Intel Core i9-11900T vs AMD Athlon II X4 635

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CPU comparison with benchmarks


Intel Core i9-11900T CPU1 vs CPU2 AMD Athlon II X4 635
Intel Core i9-11900T AMD Athlon II X4 635

CPU comparison

In this CPU comparison, we compare the Intel Core i9-11900T and the AMD Athlon II X4 635 and use benchmarks to check which processor is faster.

We compare the Intel Core i9-11900T 8 core processor released in Q1/2021 with the AMD Athlon II X4 635 which has 4 CPU cores and was introduced in Q1/2010.
Intel Core i9 (78) Family AMD Athlon II (52)
Intel Core i 11000 (22) CPU group AMD Athlon II X4 (Propus) (10)
11 Generation 1
Rocket Lake S Architecture Propus
Desktop / Server Segment Desktop / Server
Intel Core i9-10900T Predecessor --
Intel Core i9-12900T Successor --

CPU Cores and Base Frequency

The Intel Core i9-11900T is a 8 core processor with a clock frequency of 1.50 GHz (4.90 GHz). The processor can compute 16 threads at the same time. The AMD Athlon II X4 635 clocks with 2.90 GHz, has 4 CPU cores and can calculate 4 threads in parallel.

Intel Core i9-11900T Characteristic AMD Athlon II X4 635
8 Cores 4
16 Threads 4
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
1.50 GHz Frequency 2.90 GHz
4.90 GHz Turbo Frequency (1 Core) --
3.60 GHz Turbo Frequency (All Cores) --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Intel Core i9-11900T Characteristic AMD Athlon II X4 635
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

Intel UHD Graphics 750 GPU no iGPU
0.35 GHz GPU frequency --
1.30 GHz GPU (Turbo) --
12 GPU Generation --
14 nm Technology
3 Max. displays
32 Compute units --
256 Shader --
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory --
12 DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel UHD Graphics 750 GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode / Encode Codec VP9 No
Decode Codec VP8 No
Decode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

Up to 128 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i9-11900T, while the AMD Athlon II X4 635 supports a maximum of 16 GB of memory with a maximum memory bandwidth of 21.3 GB/s enabled.

Intel Core i9-11900T Characteristic AMD Athlon II X4 635
DDR4-3200 Memory DDR3-1333
128 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
4.00 MB L2 Cache 2.00 MB
16.00 MB L3 Cache --
4.0 PCIe version 2.0
20 PCIe lanes --
39.4 GB/s PCIe Bandwidth --

Thermal Management

The Intel Core i9-11900T has a TDP of 35 W. The TDP of the AMD Athlon II X4 635 is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i9-11900T Characteristic AMD Athlon II X4 635
35 W TDP (PL1 / PBP) 95 W
115 W @ 28 s TDP (PL2) --
-- TDP up --
25 W TDP down --
100 °C Tjunction max. --

Technical details

The Intel Core i9-11900T has 20.00 MB cache and is manufactured in 14 nm. The cache of AMD Athlon II X4 635 is at 2.00 MB. The processor is manufactured in 45 nm.

Intel Core i9-11900T Characteristic AMD Athlon II X4 635
14 nm Technology 45 nm
Monolithic Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions MMX, 3DNow!, SSE3, SSE4a
LGA 1200 Socket AM3
VT-x, VT-x EPT, VT-d Virtualization AMD-V
Yes AES-NI No
Windows 10, Windows 11, Linux Operating systems Windows 10, Linux
Q1/2021 Release date Q1/2010
439 $ Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core i9-11900T to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
Here you can rate the AMD Athlon II X4 635 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i9-11900T (100%)
AMD Athlon II X4 635 (23%)
⌀ Multi core performance in 2 CPU benchmarks
Intel Core i9-11900T (100%)
AMD Athlon II X4 635 (14%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 4.90 GHz
1538 (100%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
376 (24%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 4.90 GHz
1674 (100%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
373 (22%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 3.60 GHz
7680 (100%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
1288 (17%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 3.60 GHz
18282 (100%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
2100 (11%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 3.60 GHz
0 (0%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
1422 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 4.90 GHz
2055 (100%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
0 (0%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 3.60 GHz
8977 (100%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
0 (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 4.90 GHz
0 (0%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
147 (100%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 3.60 GHz
0 (0%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
563 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i9-11900T Intel Core i9-11900T
Intel UHD Graphics 750 @ 1.30 GHz
666 (100%)
AMD Athlon II X4 635 AMD Athlon II X4 635
@ 0.00 GHz
0 (0%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 4.90 GHz
0 (0%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
68 (100%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900T Intel Core i9-11900T
8C 16T @ 3.60 GHz
0 (0%)
AMD Athlon II X4 635 AMD Athlon II X4 635
4C 4T @ 2.90 GHz
265 (100%)

Devices using this processor

Intel Core i9-11900T AMD Athlon II X4 635
Unknown Unknown

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