Intel® Core™ i7-820QM

The Intel Core i7-820QM is a laptop processor with 4 cores and 8 threads (45 nm process). It launched in Sep 2009. Clocks run from 1.73 GHz base to 3.06 GHz boost. A 8-MB L3 cache backs the cores (2.3 MB per core). It supports DDR3 memory. Rated TDP is 45 W.

The Intel Core i7-820QM scores 1,059 in single-core performance and 1,847 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 1,399 for overall performance, 2,683 for productivity performance, 2,922 for creator performance, 1,778 for engineering performance and 3,639 for gaming performance. Its multi-core throughput works out to 462 per core, 231 per thread and 41 per watt. Its computed efficiency index is 209. Its performance index is 17, so its overall performance is 83% below the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the Intel Core i7-820QM scores 9,574 in integer math, 4,357 in floating-point math, 37,927 in compression, 331 in cryptography, 294 in physics simulation, 1,114 in vector SIMD, 18 in the prime sieve and 5,079 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 84% below in integer math, 91% below in floating-point math, 83% below in compression, 97% below in cryptography, 73% below in physics simulation, 93% below in vector SIMD, 73% below in the prime sieve and 78% below in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The Intel Core i7-820QM has 4 physical cores and runs 8 logical threads. It does not use a hybrid performance and efficiency core layout. It runs 2 threads per core. It runs at a base clock of 1.73 GHz and boosts up to 3.06 GHz.

The Intel Core i7-820QM is a laptop processor, belongs to the Intel Core i7 family and is manufactured on a 45 nm process. It launched in Sep 2009.

The Intel Core i7-820QM has 256 KB of L1 cache, 1 MB of L2 cache and 8 MB of L3 cache. That adds up to about 9.3 MB of cache, or 2.31 MB per core. Each core has 256 KB of private L2 cache.

The Intel Core i7-820QM has a 3-level cache hierarchy: L1 at 256 KB, L2 at 1 MB and L3 at 8 MB. L3 is the largest level and makes up about 86% of the cache listed here.

The Intel Core i7-820QM supports DDR3 memory, uses 2 memory channels, runs memory at up to 1,333 MT/s and delivers up to 21.3 GB/s of memory bandwidth. It does not support DDR5, DDR4 and LPDDR memory.

The Intel Core i7-820QM does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Core i7-820QM supports PCI Express 2.0 and provides up to 16 PCIe lanes.

The Intel Core i7-820QM has a rated TDP of 45 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

Feex has recorded 55% of the specifications it tracks for the Intel Core i7-820QM. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: Codename, ISA Family and Market Status. Cache: L4 Cache. Memory Support: ECC Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count, Foundry and Launch Price. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.

Processors close to the Intel Core i7-820QM in the Feex database, matched by socket, family, segment, architecture, core count, TDP and benchmark scores, include Intel Core i7-13620H, Intel Core i7-13700H, Intel Core i7-14700HX, Intel Core i7-14650HX and Intel Core i7-13700HX.