CPU Comparison

The AMD A8-7650K and Intel Core i5-2500T are both four-core desktop processors from different eras, targeting similar entry-level territory. The benchmark data shows a consistent, though modest, performance advantage for the AMD chip across every tested workload, while the Intel part counters with a significantly lower power envelope. The average benchmark scores are nearly identical, 860 for the AMD versus 856 for the Intel, placing both at the 23rd percentile of all CPUs, but the head-to-head results reveal where each part holds a distinct edge.

Where Each One Wins

The AMD A8-7650K wins every single benchmark in the head-to-head comparison, making it the clear choice for raw computational throughput. Its largest margin comes in Cinebench R15 multi-core, where it scores 266 against the Intel’s 250, a 6.4% advantage. The pattern holds in Cinebench R20 multi-core (1111 vs 1045, a 6.3% delta) and Cinebench R23 multi-core (2647 vs 2489, also 6.3%). Even in single-core tests, the AMD part leads: 156 vs 147 in Cinebench R20 single-core and 373 vs 351 in Cinebench R23 single-core, both representing 6.1% and 6.3% wins respectively. For any application that scales with CPU cores, such as video encoding, 3D rendering, or compiling, the A8-7650K is the faster processor.

The Intel Core i5-2500T’s winning territory is not in benchmark scores but in power consumption. With a TDP of 45 watts compared to the AMD’s 95 watts, the i5-2500T draws less than half the power under load. This makes it the better fit for compact builds with limited cooling, small form-factor systems, or any scenario where heat output and electricity draw are primary concerns. The data does not show any benchmark where the Intel part wins, so its advantage is purely operational efficiency rather than performance.

Architecture Differences

The two processors are built on fundamentally different architectures and manufacturing processes. The AMD A8-7650K uses the Steamroller architecture, codenamed Kaveri, produced on a 28 nm process at GlobalFoundries. It packs 2,411 million transistors onto a 245 mm² die. The Intel Core i5-2500T uses the Sandy Bridge architecture, also its codename, built on Intel’s 32 nm process with 1,160 million transistors on a 216 mm² die. The AMD chip has a smaller process node but a larger die and more than double the transistor count.

Cache configurations differ notably. The AMD processor has 256 KB of L1 cache and 4 MB of L2 cache, with no L3 cache at all. The Intel part offers 64 KB of L1 per core, 256 KB of L2 per core, and a shared 6 MB L3 cache. This means the i5-2500T has a larger total cache pool, with the L3 providing a shared high-speed buffer that the AMD chip lacks entirely.

Memory support is similar, both use DDR3 with dual-channel memory buses, but the AMD chip has a rated memory bandwidth of 34.1 GB/s, while the Intel part’s bandwidth is not listed in the data. Both support PCIe Gen 3 with 16 lanes from the CPU. The integrated graphics differ substantially: the A8-7650K includes Radeon R7 graphics, while the i5-2500T ships with Intel HD 2000. The AMD processor also has an unlocked multiplier, making it overclockable, whereas the Intel part is locked. The AMD chip is newer, released in 2015, versus the Intel’s 2011 launch.

The Verdict

The data points to a straightforward choice based on priorities. If performance per benchmark score is the goal, the AMD A8-7650K is the better processor. It wins all five head-to-head tests with margins between 6.1% and 6.4%, and it does so in both multi-core and single-core workloads. The Cinebench R23 multi-core score of 2647 versus 2489 represents a 158-point gap, which is meaningful for sustained rendering tasks. The unlocked multiplier adds flexibility for users willing to push the chip further, though the data does not include overclocked results.

The Intel Core i5-2500T is the better choice for users who prioritize low power consumption and thermal output. Its 45-watt TDP makes it suitable for systems where a 95-watt processor would be impractical. It also offers a larger L3 cache, which can help in certain cache-sensitive workloads, though the benchmark data does not show this translating into a win. The i5-2500T is a locked processor, so no overclocking headroom exists. For a user building a low-power media server or a quiet HTPC, the Intel part’s efficiency is a compelling argument despite its slightly lower scores.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The AMD A8-7650K is faster in every multi-core test. It scores 1111 in Cinebench R20 multi-core versus the Intel’s 1045, and 2647 in Cinebench R23 multi-core versus 2489. The margins range from 6.3% to 6.4%.

Q: How big is the performance difference in single-core tests?

A: The AMD chip leads by 6.1% in Cinebench R20 single-core (156 vs 147) and 6.3% in Cinebench R23 single-core (373 vs 351). The advantage is consistent but not dramatic.

Q: Does the Intel processor have any benchmark win?

A: No. In the head-to-head comparison, the AMD A8-7650K wins all five tests. The Intel Core i5-2500T has zero wins, though its average benchmark score of 856 is within 0.5% of the AMD’s 860.

Q: What are the power consumption differences?

A: The Intel Core i5-2500T has a TDP of 45 watts, while the AMD A8-7650K has a TDP of 95 watts. The Intel part consumes less than half the power of the AMD chip under maximum load.

Q: Can either processor be overclocked?

A: The AMD A8-7650K has an unlocked multiplier, meaning it can be overclocked. The Intel Core i5-2500T has a locked multiplier, so it cannot be overclocked.

Q: Which processor has better integrated graphics?

A: The AMD A8-7650K includes Radeon R7 graphics, while the Intel Core i5-2500T has Intel HD 2000. The data does not include graphics benchmark scores, but the AMD part’s integrated GPU is from a newer generation.

Head-to-Head Benchmarks

The largest win for the AMD A8-7650K comes in Cinebench R15 multi-core, where it scores 266 against the Intel’s 250, a 6.4% delta. This is the only test where the margin exceeds 6.3%. The other four tests all sit at 6.1% or 6.3%, showing a very flat performance profile. In Cinebench R20 multi-core, the AMD scores 1111 versus 1045, a 66-point gap that translates to 6.3%. The Cinebench R23 multi-core test shows a similar 158-point gap (2647 vs 2489), also 6.3%.

Single-core results are nearly identical in margin. Cinebench R20 single-core gives the AMD a 156 to 147 win, a 9-point difference or 6.1%. Cinebench R23 single-core shows 373 versus 351, a 22-point gap at 6.3%. The consistency of the margins across different Cinebench versions suggests the performance difference is architectural and scales uniformly with clock speed and IPC, rather than being workload-specific.

The AMD’s base clock of 3.30 GHz and boost clock of 3.80 GHz are both higher than the Intel’s 2.30 GHz base and 3.30 GHz boost. This clock advantage, combined with the newer Steamroller architecture, explains the benchmark results. The Intel part’s 6 MB L3 cache does not compensate for its lower clocks in these tests. The average benchmark scores reinforce the head-to-head results: the AMD averages 860 across all tests, while the Intel averages 856, a gap of 0.4% that aligns with the 860 vs 856 figures in the nearest rivals data.

Specification Differences

The two processors differ in nearly every major specification. The AMD A8-7650K has a base clock of 3.30 GHz and a boost clock of 3.80 GHz, compared to the Intel’s 2.30 GHz base and 3.30 GHz boost. TDP is 95 watts for the AMD and 45 watts for the Intel. The AMD uses an AMD Socket FM2+, while the Intel uses an Intel Socket 1155, meaning they are not interchangeable in any motherboard.

Architecture and manufacturing differ completely: AMD uses Steamroller on a 28 nm process from GlobalFoundries, while Intel uses Sandy Bridge on a 32 nm process from Intel. Transistor counts are 2,411 million for AMD versus 1,160 million for Intel, and die sizes are 245 mm² versus 216 mm². Cache layouts are distinct: AMD has 256 KB L1 and 4 MB L2 with no L3, while Intel has 64 KB L1 per core, 256 KB L2 per core, and 6 MB shared L3.

Memory bandwidth differs, with AMD rated at 34.1 GB/s and Intel not listed. Both support DDR3 and dual-channel memory, and both lack ECC support. PCIe is identical at Gen 3 with 16 lanes from the CPU. Integrated graphics are Radeon R7 for AMD and Intel HD 2000 for Intel. The AMD part has an unlocked multiplier; the Intel part is locked. Release dates are 2015 for the AMD and 2011 for the Intel. Neither processor has a launch MSRP listed in the data.