Intel Iris Pro Graphics P555

How It Compares

The Intel Iris Pro Graphics P555 is an integrated graphics processor (IGP) that sits in the 50th percentile of all GPUs in the benchmark database, placing it exactly at the midpoint of the performance distribution. This is a notable position for an integrated solution, as it indicates the P555 is neither a performance outlier nor a budget afterthought, but rather a squarely mid-range part in the broader GPU landscape. The data shows no nearest rivals are listed for this part, which means the comparison set is empty; consequently, all performance assessments must be framed against the absolute percentile score rather than head-to-head deltas. In practical terms, a 50th percentile ranking suggests that in any given benchmark suite, the P555 would outperform roughly half of all recorded GPUs and trail the other half, making it a balanced but unremarkable compute resource. The lack of rival data also implies that the database has insufficient comparable entries to generate relative performance metrics, so the P555's standing is defined entirely by its own specifications and raw compute characteristics rather than by competitive positioning. Without rival scores or delta percentages, the analysis defaults to interpreting the absolute figures: 768.0 GFLOPS of FP32 throughput and a 6.000 GPixel/s pixel rate provide the concrete evidence of its mid-pack capability. This is an end-of-life product, first released in late August 2015, and its 50th percentile rank reflects a design that was competent for its era but has since been surpassed by both newer integrated graphics and dedicated solutions. The empty nearestRivals array is a critical data point itself — it signals that the P555 occupies a unique or sparsely populated performance tier within the database, making direct competitive analysis impossible from the available facts.

Power and Cooling

The Intel Iris Pro Graphics P555 carries a thermal design power of 15 W, which is characteristic of low-power integrated graphics solutions intended for mobile or compact systems. This 15 W figure encompasses the entire graphics subsystem's thermal budget, meaning the IGP is designed to dissipate no more than that amount of heat under sustained load. The slot width is listed as "IGP," confirming that this is not a discrete add-in card but rather an integrated graphics processor that resides on the motherboard or within the CPU package. Consequently, there is no power connector requirement — the P555 draws its power entirely through the motherboard's power delivery system, and the fact pack explicitly lists no power connectors as a specification. The suggested PSU field is null, which is consistent with an integrated part that does not require a dedicated power supply recommendation; the host system's existing power supply, whatever its capacity, is sufficient to feed the IGP through the motherboard's standard power rails. The 15 W TDP is low enough that even the most modest system power supplies can easily accommodate it, though the absence of a suggested PSU figure in the fact pack means no specific wattage recommendation can be stated. The thermal design also benefits from the 14 nm+ process node, which contributes to the efficient power envelope, but the fact pack provides no additional cooling requirements beyond the fundamental TDP. For system builders, the key takeaway is that the P555 imposes no special power or cooling demands: a standard motherboard with integrated graphics support and a basic system fan or passive heatsink solution will suffice, as the 15 W budget is trivial compared to discrete GPUs that typically require multiple times that power draw.

Benchmark Performance

The benchmark results for the Intel Iris Pro Graphics P555 are anchored by its raw compute specifications, which provide the basis for interpreting its 50th percentile ranking. The FP32 performance stands at 768.0 GFLOPS, a figure that represents the peak single-precision floating-point throughput of the GPU. The texture rate is 48.00 GTexel/s, indicating the speed at which the texture mapping units can process texels, and the pixel rate is 6.000 GPixel/s, reflecting the rasterization throughput of the 6 ROPs. These three figures — 768.0 GFLOPS, 48.00 GTexel/s, and 6.000 GPixel/s — are internally consistent for a GPU with 384 shading units, 48 TMUs, and 6 ROPs, as the rates scale directly with the core counts and clock speeds. The base clock is 350 MHz with a boost clock of 1000 MHz, and the FP32 figure corresponds to the boost clock: 384 shading units × 2 operations per clock × 1000 MHz = 768.0 GFLOPS, confirming the boost state is the relevant performance reference. The FP16 performance is listed at 1.536 TFLOPS with a 2:1 ratio to FP32, meaning the GPU can process half-precision data at twice the rate of single-precision, which is a common architectural feature for graphics workloads that tolerate reduced precision. Since there are no nearest rivals and no average benchmark score (the field is 0), the only comparative anchor is the 50th percentile ranking. This percentile suggests that in synthetic benchmark suites, the P555 delivers performance that lands at the median of all GPUs ever tested — a remarkable feat for an integrated part with a 15 W TDP, but also a sign that its absolute performance is modest by modern standards. The 6.000 GPixel/s pixel rate is particularly telling: at 1080p resolution (approximately 2 million pixels), the P555 could theoretically fill the screen at roughly 3,000 frames per second, but real-world rendering involves far more than pixel fill, and the 768.0 GFLOPS compute ceiling will throttle actual frame rates well below that theoretical maximum.

FAQ

Q: What is the thermal design power of the Intel Iris Pro Graphics P555?

A: The TDP is 15 W, which is a low power budget suitable for integrated graphics in mobile or compact systems.

Q: Does the P555 require a dedicated power connector?

A: No, the power connectors field is null, and the slot width is listed as "IGP," meaning it draws power entirely from the motherboard.

Q: What is the FP32 performance of this GPU?

A: The FP32 throughput is 768.0 GFLOPS, which is derived from 384 shading units operating at a 1000 MHz boost clock.

Q: What API versions does the P555 support?

A: It supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3, covering modern graphics API requirements.

Q: How much VRAM does the P555 have?

A: The memory size is "System Shared," meaning it uses the host system's main memory rather than dedicated VRAM.

Q: What is the pixel fill rate of the P555?

A: The pixel rate is 6.000 GPixel/s, determined by the 6 ROPs and the boost clock speed.

Who Should Consider It

The benchmark results indicate that the Intel Iris Pro Graphics P555 is best suited for users who prioritize energy efficiency and system simplicity over raw gaming performance. Given its 50th percentile ranking and 768.0 GFLOPS FP32 throughput, this GPU is appropriate for 720p gaming at low to medium settings in less demanding titles, but the 6.000 GPixel/s pixel rate and the absence of any dedicated VRAM mean that 1080p gaming at high settings will likely exceed its capabilities. The 15 W TDP makes it an ideal choice for thin-and-light laptops or compact desktops where power consumption and heat dissipation are critical constraints, and where the user does not intend to play graphically intensive AAA games. For esports titles or older games that are not GPU-bound, the P555 can deliver playable frame rates, but the data does not support expectations of high-refresh-rate or high-resolution gaming. The 50th percentile position suggests that users coming from older integrated graphics will notice an improvement, while those accustomed to discrete GPUs will find the performance lacking. The system-shared memory means the GPU's performance is heavily dependent on the host system's memory speed and capacity, so users should ensure adequate RAM bandwidth to avoid bottlenecks. The DirectX 12 (12_1) support means the P555 can run modern games that require DX12, but the low compute throughput will limit the graphical settings and resolutions that are practical. This is an end-of-life product, so new system builders should not seek it out, but owners of existing systems with this IGP can make the most of it by sticking to 720p resolution, medium settings, and games that are not graphically demanding.

Memory Subsystem

The memory subsystem of the Intel Iris Pro Graphics P555 is entirely system-dependent, with the fact pack listing the memory size, type, and bus width all as "System Shared." This means the GPU has no dedicated VRAM and instead borrows from the host system's main memory, which introduces significant variability in performance based on the system's RAM configuration. The bandwidth is listed as "System Dependent," which is a critical caveat: the effective memory bandwidth available to the GPU depends entirely on the host system's memory speed, channel configuration, and capacity. A dual-channel DDR4 system running at high speeds will provide substantially more bandwidth to the IGP than a single-channel or slower memory configuration, and this variance can be the difference between playable and unplayable frame rates. The lack of dedicated VRAM also means that the GPU competes with the CPU for memory bandwidth, and in memory-intensive workloads, this contention can further degrade performance. For high-resolution gaming, the system-shared memory is a significant limitation because higher resolutions require larger framebuffers, and the GPU must allocate a portion of system memory that could otherwise be used by applications or the operating system. The 6.000 GPixel/s pixel rate, combined with system-shared memory, suggests that 1080p gaming is possible but will be constrained by both the compute throughput and memory bandwidth. The 384 shading units and 48 TMUs are adequate for moderate resolutions, but the 6 ROPs are a bottleneck for fill-rate-intensive effects like high-resolution textures or anti-aliasing. Users planning to play at 1440p or 4K should not expect acceptable performance, as the system-shared memory and limited fill rate will become severe constraints. The memory clock is listed as "System Shared" as well, meaning there is no fixed memory clock; the GPU operates at the speed of the host system's memory, which can range widely depending on the platform.

Ray Tracing and Feature Set

The Intel Iris Pro Graphics P555 does not include dedicated ray tracing cores or tensor cores, as both fields in the fact pack are null. This means the GPU has no hardware acceleration for real-time ray tracing or AI-based upscaling techniques, which are features found in modern discrete GPUs. The lack of RT cores implies that any ray-traced effects would have to be computed on the 384 shading units, which would be prohibitively slow given the 768.0 GFLOPS FP32 throughput. Similarly, the absence of tensor cores means that deep learning super sampling (DLSS) or similar AI-driven rendering features are unavailable. The API support, however, is modern: DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3 are all supported, which means the P555 can run applications that use these APIs, including games that support ray tracing as a feature. However, since there is no hardware RT acceleration, any ray tracing in games would fall back to compute shaders, which would run at a fraction of the performance of dedicated RT hardware. The FP16 performance of 1.536 TFLOPS (2:1 ratio) could theoretically be used for certain compute workloads that tolerate half precision, but this is not a substitute for tensor core functionality. The 14 nm+ process node and Generation 9.0 architecture are from the Skylake era, and the feature set reflects that generation's capabilities. The display outputs are motherboard-dependent, meaning the available ports (HDMI, DisplayPort, etc.) depend entirely on the motherboard's implementation. The bus interface is listed as "Ring Bus," which is an Intel-specific interconnect that ties the IGP into the CPU's ring architecture, providing lower latency than a traditional PCIe connection but also limiting the bandwidth to what the ring bus can deliver. For users interested in ray tracing or AI-accelerated features, the P555 is not a suitable platform, and its modern API support is the only saving grace for running current software titles, albeit at reduced settings and resolutions.