AMD

AMD Athlon 850

AMD processor specifications and benchmark scores

1
Cores
1
Threads
GHz Boost
45W
TDP

At a Glance

AMD
Cores / Threads 1C / 1T
Base Clock 850 GHz
TDP 45W
Architecture K10
Socket AMD Slot A
nm
Process 180 nm
Released Feb 2000

AMD Athlon 850 Specifications

Athlon 850 Core Configuration

Processing cores and threading

The AMD Athlon 850 features 1 physical cores and 1 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.

Cores
1
Threads
1
SMP CPUs
1

Athlon 850 Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Athlon 850 benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The Athlon 850 by AMD can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
850 GHz
Boost Clock
N/A
Multiplier
8.5x

AMD's Athlon 850 Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the Athlon 850 processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The Athlon 850's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
128 KB
L2 Cache
512 KB

K10 Architecture & Process

Manufacturing and design details

The AMD Athlon 850 is built on AMD's 180 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in Athlon 850 incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
K10
Codename
Pluto
Process Node
180 nm
Transistors
22 million
Die Size
102 mm²
Generation
Athlon Model 2 (Pluto)

K10 Instruction Set Features

Supported CPU instructions and extensions

The Athlon 850 by AMD supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.

MMX
SSE
SSE2
SSE3
SSE4A
AMD64
AMD-V

Power & Thermal

TDP and power specifications

The AMD Athlon 850 has a TDP (Thermal Design Power) of 45W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.

TDP
45W

AMD Slot A Platform & Socket

Compatibility information

The Athlon 850 uses the AMD Slot A socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.

Socket
AMD Slot A
Chipsets
AMD 750, VIA KX133
Package
SECC
DDR5

AMD Slot A Memory Support

RAM compatibility and speeds

Memory support specifications for the Athlon 850 define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the Athlon 850 determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.

Memory Type
unknown Depends on motherboard
Memory Bus
Single-channel

Product Information

Release and pricing details

The AMD Athlon 850 is manufactured by AMD and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the Athlon 850 by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.

Manufacturer
AMD
Release Date
Feb 2000
Launch Price
$849
Market
Desktop
Status
End-of-life
Part Number
AMD-K7850MPR52BA
Bundled Cooler
Yes

About AMD Athlon 850

The AMD Athlon 850 is a single-core desktop processor from the K10 architecture family, codenamed Pluto, released in early 2000. It operates at a base clock of 850.00 MHz with a 45 W TDP, and it targets the AMD Slot A platform. The following analysis is based solely on the available specification data, as no benchmark scores or rival comparisons were provided in the fact pack.

Benchmark Performance

The fact pack contains no benchmark scores for the AMD Athlon 850. The `benchmarks` array is empty, and the `avgBenchmarkScore` is 0. The `nearestRivals` list is also empty, meaning there are no direct comparison points from the dataset. The `percentileVsAllCpus` field indicates a value of 50, which places this processor at the median of all CPUs tracked in the benchmark database. However, without actual scores, this percentile cannot be tied to any specific performance metric, such as single-thread or multi-thread throughput.

Because no rival names, scores, or deltaPct values are available, any quantitative comparison against other processors is impossible from the supplied data. The absence of benchmark results means that statements about being ahead of or behind a competitor cannot be made. The only interpretable data point is the 50th percentile ranking, which suggests that the Athlon 850 sits in the middle of the performance distribution for all CPUs ever benchmarked in this database. This median position, however, is derived from a dataset that may include many newer, multi-core parts, so the absolute performance for a single-core 850 MHz chip is likely modest by modern standards, but the percentile itself does not encode that nuance.

The lack of rival data also means no percentage deltas can be computed. For instance, there is no information on how this processor compares to a contemporary Intel Pentium III or a later Athlon model. The fact pack simply does not include such entries. Thus, the benchmark performance section must rely on the processor’s raw specifications—850.00 MHz base clock, 1 core, 1 thread—to infer that it is a very early, entry-level desktop part from the K10 lineup, despite the K10 architecture being more commonly associated with later Phenom processors.

Who Should Consider It

Given the specifications, the AMD Athlon 850 is a single-core, single-thread processor with a 128 KB L1 cache and a 512 KB L2 cache. Its 45 W TDP and 180 nm process node indicate an older, power-efficient design for its era. For gaming, this processor would be suitable only for very early 3D titles or 2D games from around the year 2000, but no frame rate data exists in the fact pack to support a concrete recommendation. The single thread and low clock speed inherently limit modern gaming workloads, but the benchmark database does not provide any gaming scores to quantify this.

For content creation, the Athlon 850 would struggle with multi-threaded workloads such as video rendering or 3D modeling, as those tasks typically benefit from multiple cores. The fact pack shows 1 core and 1 thread, so parallel processing is not possible. Office productivity tasks, such as word processing or spreadsheet work from the early 2000s, would likely be within its capabilities, but again, no benchmark results confirm this. The `marketSegment` field lists "Desktop," which suggests it was intended for general-purpose desktop use, not specialized servers or workstations.

The `productionStatus` is "End-of-life," meaning it is no longer manufactured. The `releaseDate` of 2000-02-10 indicates it was launched early in that year. Therefore, any user considering this processor today would be looking at a vintage or retro computing scenario, not a modern workload. The `multiplierUnlocked` field is false, so overclocking is not officially supported. The `partNumber` is AMD-K7850MPR52BA, which can help identify the exact model for collector purposes.

Power and Thermals

The AMD Athlon 850 has a TDP of 45 W. This is the only thermal power figure provided in the fact pack. A 45 W TDP classifies it as a low-power part, especially compared to later desktop processors that often exceed 100 W. For cooling, this implies that a basic air cooler, such as a stock heatsink with a small fan, would suffice. The fact pack does not list any cooler specifications, but the TDP alone suggests that no exotic liquid cooling or large dual-tower heatsinks are necessary. The processor’s 180 nm process node, with 22 million transistors on a 102 mm² die, also contributes to its modest thermal output. Since no thermal throttling data or actual power draw measurements are present, the TDP is the sole metric for cooling tier inference. A 45 W chip can typically be cooled by a low-profile cooler or even a passive heatsink in a well-ventilated case, though the fact pack does not confirm passive operation. The lack of an integrated GPU means that the CPU package itself only generates heat from the core, reducing overall system thermal load.

FAQ

Q: What is the base clock speed of the AMD Athlon 850?

A: The base clock is 850.00 MHz, as listed in the fact pack.

Q: How many cores and threads does this processor have?

A: It has 1 core and 1 thread, making it a single-threaded processor.

Q: What is the TDP and what cooling does it require?

A: The TDP is 45 W, which indicates a low-power chip that can be cooled by a basic air cooler; no specific cooler model is mentioned in the data.

Q: Does the Athlon 850 support ECC memory?

A: No, the `eccMemory` field is false, so it does not support ECC memory.

Q: What is the socket type for this processor?

A: It uses the AMD Slot A socket, which is a slot-based interface rather than a modern PGA or LGA socket.

Q: Is the multiplier unlocked for overclocking?

A: No, the `multiplierUnlocked` field is false, so the multiplier is locked.

Q: When was the Athlon 850 released?

A: The release date is 2000-02-10, and the production status is "End-of-life."

Single-Thread vs Multi-Thread Behavior

The AMD Athlon 850 has exactly 1 core and 1 thread, so it is inherently single-threaded. There is no multi-threading capability, as the `threads` field equals 1. In the context of the benchmark database, the `percentileVsAllCpus` of 50 suggests that, when averaged across all CPUs, this chip sits at the median. However, because the processor cannot execute more than one thread at a time, multi-threaded workloads would run sequentially. The cache layout—128 KB L1 and 512 KB L2—provides a modest amount of on-die storage for a single core, which can help reduce latency for frequently accessed data. For real-world workloads, this means that any application that relies on parallel processing, such as modern video encoding or complex simulations, would see no benefit from multiple threads. Conversely, single-threaded tasks that are not heavily dependent on clock speed—such as older software from the late 1990s—could perform adequately, though no specific scores confirm this. The absence of a boost clock (the `boostClock` field is null) indicates that the processor runs at a fixed 850.00 MHz, with no dynamic frequency scaling. This fixed clock means that single-thread performance is solely determined by the architecture and cache efficiency, not by adaptive boosting. The 512 KB L2 cache is relatively large for a single-core chip of that era, which may help with repeated memory accesses. However, without benchmark data, the exact single-thread vs. multi-thread behavior cannot be quantified beyond the core/thread count.

Platform and Compatibility

The AMD Athlon 850 uses the AMD Slot A socket, which is a slot-based form factor rather than a pin grid array (PGA) socket. This is a key compatibility consideration, as Slot A motherboards are no longer produced. The fact pack lists the memory support as "unknown" and notes that it "Depends on motherboard," with a single-channel memory bus. ECC memory is not supported, as the `eccMemory` field is false. The PCIe field is null, meaning no PCI Express support is documented; this aligns with the era, as Slot A systems typically used AGP and PCI slots, but the fact pack does not specify those. The processor does not have integrated graphics, as the `integratedGraphics` field is null, so a discrete graphics card is required for display output. The memory bus is single-channel, which limits memory bandwidth compared to dual-channel platforms, but the fact pack does not provide a bandwidth figure. The upgrade path is severely limited: because the socket is Slot A and the production status is "End-of-life," there are no newer processors that fit this socket. The architecture is "K10," which is unusual for a 2000 release, but the fact pack lists it as such. The process node is 180 nm, with 22 million transistors on a 102 mm² die. The launch MSRP was $849, which is a single data point for historical context. The multiplier is locked, so users cannot adjust the CPU multiplier for overclocking. The part number AMD-K7850MPR52BA can be used to verify compatibility with specific Slot A motherboards, but the fact pack does not provide a motherboard compatibility list.

Detailed benchmark scores and charts for the AMD Athlon 850 are below.

Benchmark Scores

No benchmark data available for this CPU.

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