Intel Core i7-1255U | AMD Ryzen 9 7940HX | |
CPU comparisonIntel Core i7-1255U or AMD Ryzen 9 7940HX - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The Intel Core i7-1255U has 10 cores with 12 threads and clocks with a maximum frequency of 4.70 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Core i7-1255U was released in Q1/2022. The AMD Ryzen 9 7940HX has 16 cores with 32 threads and clocks with a maximum frequency of 5.20 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The AMD Ryzen 9 7940HX was released in Q1/2023. |
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Intel Core i7 (298) | Family | AMD Ryzen 9 (40) |
Intel Core i 1200P/1200U (21) | CPU group | AMD Ryzen 7045 (6) |
12 | Generation | 6 |
Alder Lake U | Architecture | Dragon Range (Zen 4) |
Mobile | Segment | Mobile |
-- | Predecessor | -- |
Intel Core i7-1355U | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core i7-1255U has 10 CPU cores and can calculate 12 threads in parallel. The clock frequency of the Intel Core i7-1255U is 1.70 GHz (4.70 GHz) while the AMD Ryzen 9 7940HX has 16 CPU cores and 32 threads can calculate simultaneously. The clock frequency of the AMD Ryzen 9 7940HX is at 2.40 GHz (5.20 GHz). |
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Intel Core i7-1255U | Characteristic | AMD Ryzen 9 7940HX |
10 | Cores | 16 |
12 | Threads | 32 |
hybrid (big.LITTLE) | Core architecture | normal |
Yes | Hyperthreading | Yes |
No | Overclocking ? | Yes |
1.70 GHz (4.70 GHz) 2x Golden Cove |
A-Core | 2.40 GHz (5.20 GHz) 16x Zen 4 |
1.20 GHz (3.50 GHz) 8x Gracemont |
B-Core | -- |
Integrated graphics (iGPU)The Intel Core i7-1255U or AMD Ryzen 9 7940HX has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
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Intel Iris Xe Graphics 96 (Alder Lake) | GPU | AMD Radeon 610M |
0.35 GHz | GPU frequency | 0.40 GHz |
1.25 GHz | GPU (Turbo) | 2.20 GHz |
13 | GPU Generation | 9 |
10 nm | Technology | 6 nm |
4 | Max. displays | 3 |
96 | Compute units | 2 |
768 | Shader | 128 |
No | Hardware Raytracing | Yes |
No | Frame Generation | No |
32 GB | Max. GPU Memory | 8 GB |
12.1 | DirectX Version | 12 |
Hardware codec supportA 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. |
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Intel Iris Xe Graphics 96 (Alder Lake) | GPU | AMD Radeon 610M |
Decode / Encode | Codec h265 / HEVC (8 bit) | Decode / Encode |
Decode / Encode | Codec h265 / HEVC (10 bit) | Decode / Encode |
Decode / Encode | Codec h264 | Decode / Encode |
Decode / Encode | Codec VP9 | Decode / Encode |
Decode | Codec VP8 | Decode / Encode |
Decode | Codec AV1 | Decode |
Decode / Encode | Codec AVC | Decode / Encode |
Decode | Codec VC-1 | Decode |
Decode / Encode | Codec JPEG | Decode / Encode |
Memory & PCIeThe Intel Core i7-1255U can use up to 64 GB of memory in 2 memory channels. The maximum memory bandwidth is 83.2 GB/s. The AMD Ryzen 9 7940HX supports up to 64 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 83.2 GB/s. |
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Intel Core i7-1255U | Characteristic | AMD Ryzen 9 7940HX |
LPDDR5-5200, LPDDR4X-4266, DDR5-4800, DDR4-3200 | Memory | DDR5-5200 |
64 GB | Max. Memory | 64 GB |
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
83.2 GB/s | Max. Bandwidth | 83.2 GB/s |
No | ECC | No |
6.50 MB | L2 Cache | 16.00 MB |
12.00 MB | L3 Cache | 64.00 MB |
4.0 | PCIe version | 5.0 |
28 | PCIe lanes | 28 |
55.1 GB/s | PCIe Bandwidth | 110.3 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the Intel Core i7-1255U is 15 W, while the AMD Ryzen 9 7940HX has a TDP of 55 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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Intel Core i7-1255U | Characteristic | AMD Ryzen 9 7940HX |
15 W | TDP (PL1 / PBP) | 55 W |
55 W | TDP (PL2) | -- |
-- | TDP up | 75 W |
-- | TDP down | -- |
100 °C | Tjunction max. | 100 °C |
Technical detailsThe Intel Core i7-1255U is manufactured in 10 nm and has 18.50 MB cache. The AMD Ryzen 9 7940HX is manufactured in 5 nm and has a 80.00 MB cache. |
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Intel Core i7-1255U | Characteristic | AMD Ryzen 9 7940HX |
10 nm | Technology | 5 nm |
Monolithic | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4.1, SSE4.2, AVX2 | ISA extensions | SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 |
BGA 1744 | Socket | FL1 |
VT-x, VT-x EPT, VT-d | Virtualization | AMD-V, SVM |
Yes | AES-NI | Yes |
Windows 10, Windows 11, Linux | Operating systems | Windows 10, Windows 11, Linux |
Q1/2022 | Release date | Q1/2023 |
-- | Release price | -- |
show more data | show more data | |
Intel Core i7-1255U
10C 12T @ 4.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 5.20 GHz |
Intel Core i7-1255U
10C 12T @ 2.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 2.40 GHz |
Intel Core i7-1255U
10C 12T @ 4.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 5.20 GHz |
Intel Core i7-1255U
10C 12T @ 2.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 2.40 GHz |
Intel Core i7-1255U
Intel Iris Xe Graphics 96 (Alder Lake) @ 1.25 GHz |
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AMD Ryzen 9 7940HX
AMD Radeon 610M @ 2.20 GHz |
Intel Core i7-1255U
10C 12T @ 4.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 5.20 GHz |
Intel Core i7-1255U
10C 12T @ 2.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 2.40 GHz |
Intel Core i7-1255U
10C 12T @ 4.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 5.20 GHz |
Intel Core i7-1255U
10C 12T @ 2.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 2.40 GHz |
Intel Core i7-1255U
10C 12T @ 2.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 2.40 GHz |
Intel Core i7-1255U
10C 12T @ 4.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 5.20 GHz |
Intel Core i7-1255U
10C 12T @ 2.70 GHz |
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AMD Ryzen 9 7940HX
16C 32T @ 2.40 GHz |
Devices using this processor |
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Intel Core i7-1255U | AMD Ryzen 9 7940HX |
Unknown | Unknown |