 | Below are comparison charts, telling how the AMD Phenom II X2 521 stands against other x86 microprocessors in single-threaded tasks. The difference in performance between Phenom II X2 521 and each of the listed CPUs was calculated as an average of differences in 7 single-threaded benchmarks from our benchmark database. The list of test applications and programs is comprised of single-core CINEBENCH R10 or R15, one-core versions of FLAC, LAME MP3, H.264, and XVid encoding programs, as well as Super PI and wPrime, configured to use only one thread. Be aware that these tests utilize only one core, for this reason they do not depend on such processor features as the number of cores and Hyper-Threading. |
Single-threaded performance of AMD Phenom II X2 CPUs for Socket AM2+ / Socket AM3
This graph compares the AMD Phenom II X2 521 to other Phenom II X2 processors. Major specifications differences between all CPUs can be found in the "Specs" column. Since the tests run on a single core, the "Specs" column does not include the number of cores, or Hyper-Threading support.
To display all benchmark results as percentage values relative to any CPU please click on processor's graph bar or result value. To see detailed comparison, including specifications and individual benchmarks, between any microprocessor from the chart and the currently selected part, please click on the > link. Both features require javascript. CPU comparison will open in a popup window.
| Model | Relative performance | Specs | ||
|---|---|---|---|---|
| Phenom II X2 521 | 3.5 GHz, 65W | > | ||
| Phenom II X2 560 BE | 3.3 GHz, 6MB, 80W | > | ||
| Phenom II X2 511 | 3.4 GHz, 65W | > | ||
| Phenom II X2 550 BE (C2) | 3.1 GHz, 6MB, 94W | > | ||
| Phenom II X2 545 (C2) | 3 GHz, 6MB, 94.3W | > | ||
| Phenom II X2 550 (C3) | 3.1 GHz, 6MB, 80W | > | ||
| Phenom II X2 555 BE (C3) | 3.2 GHz, 6MB, 80W | > | ||
| Phenom II X2 B53 | 2.8 GHz, 6MB, 80W | > |
AMD CPUs with similar single-threaded performance
This chart shows AMD microprocessors with about the same level of single-threaded performance as the Phenom II X2 521.
| Model | Relative performance | Specs | ||
|---|---|---|---|---|
| Phenom II X4 960T | 3 / 3.4 GHz, 6MB | > | ||
| Athlon X4 740 | 3.2 / 3.7 GHz | > | ||
| A8-5500 | 3.2 / 3.7 GHz | > | ||
| FX-8310 | 3.4 / 4.3 GHz, 8MB | > | ||
| FX-4100 | 3.6 / 3.8 GHz, 8MB | > | ||
| FX-8370E | 3.3 / 4.3 GHz, 8MB | > | ||
| Phenom II X2 521 | 3.5 GHz | > | ||
| FX-8300 | 3.3 / 4.2 GHz, 8MB | > | ||
| Phenom II X4 955 (125W, rev. C2) | 3.2 GHz, 6MB | > | ||
| Phenom II X4 955 (125W, rev. C2, BE) | 3.2 GHz, 6MB | > | ||
| Phenom II X2 560 BE | 3.3 GHz, 6MB | > | ||
| Phenom II X6 1055T (125W) | 2.8 / 3.3 GHz, 6MB | > | ||
| Phenom II X6 1055T (95W) | 2.8 / 3.3 GHz, 6MB | > |
Similar performing Intel CPUs
This benchmark chart includes Intel CPUs with single-threaded performance, similar to the AMD Phenom II X2 521. For the differences between most important characteristics of listed processors please see the "Specs" column.
| Model | Relative performance | Specs | ||
|---|---|---|---|---|
| Intel Core 2 Quad Q6700 | 2.67 GHz, 95W | > | ||
| Intel Celeron G1610T | 2.3 GHz, 2MB, 35W | > | ||
| Intel Pentium G6950 | 2.8 GHz, 3MB, 73W | > | ||
| Intel Celeron G530 | 2.4 GHz, 2MB, 65W | > | ||
| Intel Pentium E6600 | 3.07 GHz, 65W | > | ||
| Intel Core 2 Duo E7200 | 2.53 GHz, 65W | > | ||
| AMD Phenom II X2 521 | 3.5 GHz, 65W | > | ||
| Intel Pentium G630T | 2.3 GHz, 3MB, 35W | > | ||
| Intel Pentium E5700 | 3 GHz, 65W | > | ||
| Intel Pentium E5200 | 2.5 GHz, 65W | > | ||
| Intel Core 2 Quad Q9505 | 2.83 GHz, 95W | > | ||
| Intel Pentium G620T | 2.2 GHz, 3MB, 35W | > | ||
| Intel Celeron G550T | 2.2 GHz, 2MB, 35W | > |
Phenom II X2 521 compared to the fastest desktop CPUs
This chart shows how the AMD Phenom II X2 521 stands against the fastest desktop x86 CPUs when running single-threaded tasks.
| Model | Relative performance | Specs | ||
|---|---|---|---|---|
| Intel Core i7-6700K | 4 / 4.2 GHz, 8MB | > | ||
| Intel Core i7-4790K | 4 / 4.4 GHz, 8MB | > | ||
| Intel Core i7-6700 | 3.4 / 4 GHz, 8MB | > | ||
| Intel Core i5-6600K | 3.5 / 3.9 GHz, 6MB | > | ||
| Intel Core i5-6600 | 3.3 / 3.9 GHz, 6MB | > | ||
| Intel Core i3-6320 | 3.9 GHz, 4MB | > | ||
| Intel Core i7-4790 | 3.6 / 4 GHz, 8MB | > | ||
| Intel Core i7-4790S | 3.2 / 4 GHz, 8MB | > | ||
| Intel Core i3-6300 | 3.8 GHz, 4MB | > | ||
| Intel Core i7-4771 | 3.5 / 3.9 GHz, 8MB | > | ||
| Intel Core i7-4770 | 3.4 / 3.9 GHz, 8MB | > | ||
| Intel Core i7-4770K | 3.5 / 3.9 GHz, 8MB | > | ||
| AMD Phenom II X2 521 | 3.5 GHz | > |