Feex·CPU
AMD · Phenom · Desktop

AMD® Phenom™ II X2 511

The AMD Phenom II X2 511 is a desktop processor released in Jan 2011. It has 2 cores and 2 threads, a base clock of 3.40 GHz and a 65 W TDP.

AMDPhenomDesktopTDP 65 W2011
Cores
2
Threads
2
Base Clock
3.4 GHz
TDP
65 W
Multi-Core Performance
1,265
Single-Core Performance
1,295
Core layout
PP
2 Performance 2 Threads

Overview

The AMD Phenom II X2 511 is a desktop processor with 2 cores and 2 threads. It launched in Jan 2011. Rated TDP is 65 W.

Performance

Overall CPU Performance computed
1,280
5% of reference
Reference ceiling 25,000
Multi-Core Performance PassMark rating
1,265
1% of reference
Reference ceiling 120,000
Single-Core Performance PassMark rating
1,295
24% of reference
Reference ceiling 5,500
Productivity Performance computed
2,635
2% of reference
Reference ceiling 160,000
Creator Performance computed
3,027
2% of reference
Reference ceiling 140,000
Engineering Performance computed
1,178
1% of reference
Reference ceiling 200,000
Gaming Performance computed
4,201
19% of reference
Reference ceiling 22,000
Performance per Core computed
633
3% of reference
Reference ceiling 21,053
Performance per Thread computed
633
6% of reference
Reference ceiling 10,527
Performance per Watt computed
20
1% of reference
Reference ceiling 2,000
Efficiency Index computed
159
4% of reference
Reference ceiling 4,000
Performance index computed
16
Intel Core i5-12400 = 100

The AMD Phenom II X2 511 scores 1,295 in single-core performance and 1,265 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 1,280 for overall performance, 2,635 for productivity performance, 3,027 for creator performance, 1,178 for engineering performance and 4,201 for gaming performance. Its multi-core throughput works out to 633 per core, 633 per thread and 20 per watt. Its computed efficiency index is 159. Its performance index is 16, so its overall performance is 84% 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.

How these scores are computed

Single-core and multi-core performance are PassMark CPU Mark single-thread and multi-thread ratings. Every other figure on this page's performance section is computed by Feex from those two ratings plus core count, thread count and TDP, so it is a derived value and not a separate benchmark run.

  • Overall performance is the geometric mean of the two ratings: the square root of single-core times multi-core.
  • Productivity performance is 0.65 times multi-core plus 1.4 times single-core.
  • Creator performance is 0.55 times multi-core plus 1.8 times single-core.
  • Engineering performance is multi-core times the smaller of 1.4 and (0.9 plus cores divided by 64).
  • Gaming performance is 3 times single-core plus 0.25 times multi-core.
  • Performance per core, per thread and per watt divide the multi-core rating by physical cores, logical threads and TDP in watts.
  • The efficiency index is the square root of single-core times multi-core, divided by the square root of TDP.
  • The performance index is overall performance divided by the overall performance of the Intel Core i5-12400 (8,069), times 100.

Workload Benchmarks

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.

Integer Math Throughput
4,048
1% of reference
Reference ceiling 617,811
93% below the Intel Core i5-12400 (58,893)
Raw integer arithmetic throughput across cores.
Floating-Point Math
2,760
0% of reference
Reference ceiling 600,000
94% below the Intel Core i5-12400 (45,899)
Heavy floating-point math, mixed precision.
Compression Performance
28,875
1% of reference
Reference ceiling 2,309,868
87% below the Intel Core i5-12400 (228,054)
Throughput on lossless compression workloads.
Cryptography Performance
364
0% of reference
Reference ceiling 137,106
97% below the Intel Core i5-12400 (11,489)
Symmetric encryption and hashing throughput.
Physics Simulation
124
1% of reference
Reference ceiling 12,291
89% below the Intel Core i5-12400 (1,090)
Iterative physics & rigid-body simulation.
Vector / SIMD Throughput
676
0% of reference
Reference ceiling 172,975
96% below the Intel Core i5-12400 (15,509)
Wide-vector SIMD intrinsics performance.
Prime Sieve
7
1% of reference
Reference ceiling 1,067
90% below the Intel Core i5-12400 (67)
Searching for prime numbers (branch-heavy work).
Sort Performance
3,762
1% of reference
Reference ceiling 260,323
83% below the Intel Core i5-12400 (22,652)
Random string sorting throughput.

In the individual workload tests the AMD Phenom II X2 511 scores 4,048 in integer math, 2,760 in floating-point math, 28,875 in compression, 364 in cryptography, 124 in physics simulation, 676 in vector SIMD, 7 in the prime sieve and 3,762 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 93% below in integer math, 94% below in floating-point math, 87% below in compression, 97% below in cryptography, 89% below in physics simulation, 96% below in vector SIMD, 90% below in the prime sieve and 83% 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.

Core Configuration

Cores
2
Threads
2
Performance Cores
2
Threads per Core
1
Hybrid Architecture
No
Base Clock
3.4 GHz
Boost Clock
Not recorded

The AMD Phenom II X2 511 has 2 physical cores and runs 2 logical threads. It does not use a hybrid performance and efficiency core layout. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 3.40 GHz.

Architecture & Generation

Manufacturer
AMD
Family
Phenom
Segment
Desktop
Generation
Not recorded
Architecture
Not recorded
Process Node
Not recorded
Lithography
Not recorded
Release Date
Jan 2011

The AMD Phenom II X2 511 is a desktop processor and belongs to the AMD Phenom family. It launched in Jan 2011.

Cache

L1 Cache (Total)
256 KB
L2 Cache (Total)
2 MB
L2 Cache (per Core)
1 MB
L3 Cache
Not recorded
Cache per Core
1.1 MB
Total Cache
2.3 MB

The AMD Phenom II X2 511 has 256 KB of L1 cache and 2 MB of L2 cache. That adds up to about 2.3 MB of cache, or 1.13 MB per core. Each core has 1 MB of private L2 cache.

Cache Hierarchy

L1L2
L1 256 KBL2 2 MB

The AMD Phenom II X2 511 has a 2-level cache hierarchy: L1 at 256 KB and L2 at 2 MB. L2 is the largest level and makes up about 89% of the cache listed here.

Power & Thermals

TDP
65 W

The AMD Phenom II X2 511 has a rated TDP of 65 W.

Platform Capabilities

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.

Instruction Sets

6 supported
Supported
64-bit (x86-64)ABMSSESSE2SSE3MMX
Not recorded
AES-NIAVX-512AVX2AVXAVX-VNNICET

Security and Reliability

0 supported
Not recorded
AMD SEVAMD SMEControl-flow Enforcement (CET)Execute Disable (NX)Memory EncryptionSMAP

Virtualization

0 supported
Not recorded
AMD SVMAMD-V (Hardware Virtualization)NPT / RVIIOMMUSecond-Level Address Translation

OS Compatibility

0 supported
Not supported
Windows 11 eligible

The AMD Phenom II X2 511 supports 64-bit (x86-64), ABM, SSE, SSE2, SSE3 and MMX among its instruction set features. Feex has no record for AES-NI, AVX-512, AVX2, AVX, AVX-VNNI and CET, which is different from being unsupported.

Feex has no record for AMD SEV, AMD SME, Control-flow Enforcement (CET), Execute Disable (NX), Memory Encryption and SMAP, which is different from being unsupported.

Feex has no record for AMD SVM, AMD-V (Hardware Virtualization), NPT / RVI, IOMMU and Second-Level Address Translation, which is different from being unsupported.

Feex records these as not true for the AMD Phenom II X2 511: Windows 11 eligible.

Naming & Aliases

Display Name
AMD® Phenom™ II X2 511
Normalized Name
AMD® Phenom™ II X2 511
Product line brand
Phenom

Real-world compute in the Feex fleet

No Feex fleet machines with the AMD Phenom II X2 511 have reported compute telemetry yet, so real-world compute for this processor is not recorded.

How fleet compute is measured · Fleet compute leaderboard · JSON

Data Coverage

Feex has recorded 36% of the specifications it tracks for the AMD Phenom II X2 511. 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: Max Memory, Memory Channels, Memory Bandwidth, Memory Types, DDR5 Support, DDR4 Support, LPDDR Support, ECC Memory and Max Memory Speed. Graphics: Integrated Graphics, Graphics Model, Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Socket, Package, Package Size, PCIe Generation and PCIe Lanes. 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.

Common questions

How many cores and threads does the AMD Phenom II X2 511 have?

The AMD Phenom II X2 511 has 2 cores and 2 threads.

What is the TDP of the AMD Phenom II X2 511?

The AMD Phenom II X2 511 has a TDP of 65 W.

How does the AMD Phenom II X2 511 perform?

In the Feex normalized performance dataset, the AMD Phenom II X2 511 scores 1,265 multi-core and 1,295 single-core.

How much cache does the AMD Phenom II X2 511 have?

The AMD Phenom II X2 511 has 256 KB of L1 cache and 2048 KB of L2 cache.

How does the AMD Phenom II X2 511 compare with the Intel Core i5-12400?

The AMD Phenom II X2 511 has a computed performance index of 16, which is 84% below the Intel Core i5-12400 (index 100). The index is derived from the single-core and multi-core ratings.